Use 0.25, 3 / 4, 8 and another number to form a proportion, which can be () () () It's the same day

3：4=6：8
3：6=4：8
4:3=2:6
4:6=2:3
6:3=4:2
For example, 3:4 = 6:8 and 4:3 = 8:6

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