1)1,4 : 2 1/3 = 0,2х : 3 2) 2 1/7 : 2,5 = 8,4 : 7х 3)4,5х : 2,7 = 9 : 1,8 4)7 1/3 : 1 5/6 = 0,6х : 0,75

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1) 1.4 : 2 1/3 = 0.2x : 3
1.4 = 14/10 = 14/10 = 7/5
2 1/3 = 7/3

7/5 : 7/3 = 0.2x : 3
(7/5) * (3/7) = 0.2x
0.6 = 0.2x
x = 3

2) 2 1/7 : 2.5 = 8.4 : 7x
15/7 : 5/2 = 84/10 : 7x
(15/7) * (2/5) = (84/10) / 7x
6/7 = 42/10x
x = 1.428

3) 4.5x : 2.7 = 9 : 1.8
45/10x : 27/10 = 9 : 18/10
(45/10x) * (10/27) = 9 : 18/10
5/3x = 9 : 1.8
1.666x = 9 : 1.8
x = 5.4

4) 7 1/3 : 1 5/6 = 0.6x : 0.75
22/3 : 11/6 = 6x : 3/4
(22/3) * (6/11) = (6x) / (3/4)
4 : 2/3x = 12 : 3/4
4 : 2/3x = 16 : 4
(2/3)x = 4
x = 6

Please check the calculations and let me know if you need further assistance.