X: 3.5 = 1.4:5.6, 1 / 2:1 / 5 = x: 1 / 10, 36 / x = 1.8:5, 2 / 5: x = 8 / 7:10, 3.6:0.9 = x: 0.15, X: 3 / 5 = 3 / 8:0.05 X: 3.5 = 1.4:5.6, 1 / 2:1 / 5 = x: 1 / 10, 36 / x = 1.8:5, 2 / 5: x = 8 / 7:10, 3.6:0.9 = x: 0.15, X: 3 / 5 = 3 / 8:0.05

X: 3.5 = 1.4:5.6, 1 / 2:1 / 5 = x: 1 / 10, 36 / x = 1.8:5, 2 / 5: x = 8 / 7:10, 3.6:0.9 = x: 0.15, X: 3 / 5 = 3 / 8:0.05 X: 3.5 = 1.4:5.6, 1 / 2:1 / 5 = x: 1 / 10, 36 / x = 1.8:5, 2 / 5: x = 8 / 7:10, 3.6:0.9 = x: 0.15, X: 3 / 5 = 3 / 8:0.05

X:3.5=1.4:5.6、
X=3.5×1.4÷5.6
X=7/8
1/2:1/5=X:1/10、
X=1/2×1/10÷1/5
X=1/4
36/X=1.8:5
X=36×5÷1.8
X=100
2/5:X=8/7:10、
X=2/5×10÷8/7
X=7/2
3.6:0.9=X:0.15、
X=3.6×0.15÷0.9
X=0.6
X:3/5=3/8:0.05
X=3/5×3/8÷0.05
X=9/2.