Can't install libdouble-conversion1 on Ubuntu-19.10

1. Download these packages first:

   1. libdouble-conversion1 (http://ftp.br.debian.org/debian/pool/main/d/double-conversion/libdouble-conversion1_3.1.0-3_amd64.deb)
   2. qt-at-spi (http://ftp.br.debian.org/debian/pool/main/q/qt-at-spi/qt-at-spi_0.4.0-9_amd64.deb)
   3. libjpeg-turbo8 (http://archive.ubuntu.com/ubuntu/pool/main/libj/libjpeg-turbo/libjpeg-turbo8_2.0.3-0ubuntu1_amd64.deb)
   4. libjpeg8 (http://archive.ubuntu.com/ubuntu/pool/main/libj/libjpeg8-empty/libjpeg8_8c-2ubuntu8_amd64.deb)
   5. packet tracer 7.3

2. Open terminal and change directory to Downloads (where the downloaded packages exist)

3. Make all the downloaded packages executable (chmod +x packagename)

4. Copy /home/username/.config/mimeapps.list to /root/.config/

5. Install libdouble-conversion1 and qt-at-spi packages (sudo dpkg -i packagename)

6. Install libjpeg-turbo8 package. Here, you may find library conflict error. If so, remove the old one (sudo apt purge packagename). There will be some warning.Just type this command (sudo apt --fix-broken install). And then, remove again. Now, you can install libjpeg-turbo8 package again.

7. Install libjpeg8 package.

8. Finally, you can install Packet Tracer 7.3 package.\

Good luck

You can use packages from other versions:

wget http://mirrors.kernel.org/ubuntu/pool/main/d/double-conversion/libdouble-conversion1_2.0.1-4ubuntu1_amd64.deb
sudo apt install ./libdouble-conversion1_2.0.1-4ubuntu1_amd64.deb
wget http://mirrors.kernel.org/ubuntu/pool/main/q/qt-at-spi/qt-at-spi_0.4.0-3_amd64.deb
sudo apt install ./qt-at-spi_0.4.0-3_amd64.deb

And then, install Packet Tracer from terminal:

sudo apt-get install <absolute/path/to/your/package>

After downloading packet tracer,I tried installing it with sudo dpkg -i PacketTracer_730_amd64.deb and got this:

dpkg: dependency problems prevent configuration of packettracer:
 packettracer depends on qt-at-spi; however:
  Package qt-at-spi is not installed.

When i tried to install qt-at-spi I got this message

Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 qt-at-spi : Depends: libqt4-dbus (>= 4:4.8.0) but it is not going to be installed
             Depends: libqtcore4 (>= 4:4.8~) but it is not going to be installed
             Depends: libqtgui4 (>= 4:4.8~) but it is not going to be installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

Running sudo apt --fix-broken install fixed all my issues,packet tracer was installed.