45:x=18,9:4,2

To solve the equation \( \frac{45}{x} = \frac{18}{9.4} \cdot 2 \), we can start by calculating the right side.

First, let's simplify \( \frac{18}{9.4} \):

1. Calculate \( \frac{18}{9.4} \): \[ \frac{18}{9.4} \approx 1.915 \]

2. Now, multiply that by 2: \[ 1.915 \times 2 \approx 3.83 \]

Now we have the equation: \[ \frac{45}{x} = 3.83 \]

To find \( x \), we can cross-multiply: \[ 45 = 3.83x \]

Now, isolate \( x \) by dividing both sides by 3.83: \[ x = \frac{45}{3.83} \]

Calculating that gives: \[ x \approx 11.75 \]

So, the solution for \( x \) is approximately \( 11.75 \).