Proportional numbers are numbers with the same equivalent ratio
98/126 is proportional to 84/108
The number is given as:

Reduce fraction to the lowest term

Reduce 86/110 to the lowest term

Divide by 2/2

43/55 is not equivalent to 7/9
Reduce 98/126 to the lowest term

Divide by 14/14

7/9 is equivalent to 7/9.
Hence, 98/126 is proportional to 84/108
Read more about proportional numbers at:
brainly.com/question/1781657
Answer:
$25.00
Step-by-step explanation:
You already know that $85 is an additional fee added to the monthly fees.
So, you first have to subtract 85 from $685 to get the total amount of monthly fees paid over 2 years.
685-85= 600
So, you can conclude that $600 is the total amount of monthly fees paid.
Now, you want to divide 600 by (the number of months in 2 years) to get the amount of monthly fees.
Since there is 24 months in 2 years you do:
600/ 24 which equals 25.
In conclusion, you can find that the monthly fee is $25.00.