HI!
(275.000 - 250.000) = 25000
(0,89 - 0,95) = -3/50 = -0,06
(275.000 - 269.458)= 5542
Also:
25000/-0,06 = 5542/(0,89 - x) |*(0,89 - x)
- 1250000/3 * (0,89 - x) = 5542
-1112500/3 +1250000/3 *x = 5542 |+1112500/3
1250000/3 *x= 5542+ 1112500/3 |: (1250000/3)
x= (5542+ 1112500/3)/(1250000/3)
Ausrechnen
x= 0,903308