To solve the problem, we need to use the property of similar trapezoids. The trapezoids $ABCD$ and $GFJH$ are similar, which means that the corresponding sides are proportional.

Given:

• $AB = 23$
• $CD = 29$
• $GF = x$ (the side we need to find)
• $HJ = 37$

Since the trapezoids are similar, the ratio of corresponding sides should be equal: $\frac{AB}{GF} = \frac{CD}{HJ}$

Substituting the given values: $\frac{23}{x} = \frac{29}{37}$

Now, solve for $x$ by cross-multiplying: $23 \times 37 = 29 \times x$ $851 = 29x$ $x = \frac{851}{29}$ $x = 29.34$

So, $x$ is approximately 29.34.

Let me know if you need further details or explanations on any step!

Here are 5 related questions you might find interesting:

1. What does it mean for two shapes to be similar?
2. How can you find the area of similar trapezoids if only one side is known?
3. What are some real-world applications of similar figures?
4. How does the ratio of perimeters relate to the ratio of corresponding sides in similar figures?
5. If the trapezoids were instead triangles, would the approach to solving for $x$ change?

Tip: When working with similar figures, always remember to set up a proportion between corresponding sides before solving for any unknown values.