Answer:
49 is the largest number
Explanation:
sum the parts of the ratio, 1 + 3 + 4 + 7 = 15 parts
divide the sum 105 by 15 to find the value of one part of the ratio
105 ÷ 15 = 7 ← value of 1 part of the ratio
The largest number is from the largest part of the ratio, that is 7 , then
7 parts = 7 × 7 = 49 ← biggest number