We want to simplify the following ratio:
[tex]41.6\colon28.8[/tex]Let's multiply both numbers by 10, so we don't need to deal with decimals.
[tex]\frac{41.6}{28.8}=\frac{416}{288}[/tex]Now, let's factorize both numbers to get their greatest common factor
[tex]\begin{gathered} 416=2\times2\times2\times2\times2\times13=32\times13 \\ 288=2\times2\times2\times2\times2\times3\times3=2^5\times9=32\times9 \end{gathered}[/tex]The greatest common factor is 32. Divinding both numerator and denominator by 32, we have
[tex]\frac{416/32}{288/32}=\frac{13}{9}[/tex]Our simplified ratio is 13/9.