19/x = 76/419/x = 19x = 1
x/15 = 7.5/2.5x/15 = 3x = 45
1.8/0.6 = x/53 = x/5x = 15
3/0.3 = 6.2/x10 = 6.2/xx = 0.62
1.96/1.4 = x/0.51.4 = x/0.5x = 0.7
19/x = 76/4
19/x = 19
x = 1
x/15 = 7.5/2.5
x/15 = 3
x = 45
1.8/0.6 = x/5
3 = x/5
x = 15
3/0.3 = 6.2/x
10 = 6.2/x
x = 0.62
1.96/1.4 = x/0.5
1.4 = x/0.5
x = 0.7