1 Find the ratio of the following ratios. (1) 45: 75, answer 9: 25 (2) 0. 16: 0.8, answer 1: 5 (3) three quarters: five tenths, answer 9: 5 (4) 3.6: 4.2, answer. (1) 2 1: 105, answer 7: 35 (2) 7.2: 0.42, answer 120: 7 (3) 5/6: 4, answer15.