Найдите неизвестный член пропорции. 6 1/2: x=6 5/6 : 4,1 0,38: x=4 3/4: 1 7/8 10,4: 3 5/7=x: 5/11 1,25: 1,4=0,75: x 3 1/2: 0,4=x: 1 1/7 15,6: 2,88=x: 14 2 /5

6 5/6х = 4,1* 6,5
41/6х = 26,65
х = 3,9

4 3/4х = 0,38 * 1 7/8
19/4х = 0,38 * 15/8
19/4х = 0,7125
х = 0,15

3 5/7х = 10,4 * 5/11
26/7х = 52/5 * 5/11
26/7х = 52/11
х = 14/11
х = 1ц.3/11

1,25х = 1,4 * 0,75
1,25х = 1,05
      х = 0,84

0,4х = 3 1/2 * 1 1/7
0,4х = 7/2 * 8/7
0,4х = 4
х = 10

2,88х = 15,6 * 14 2/5
2,88х = 15,6 * 14,4
2,88х = 224,64
х = 78