1. **State the problem:** We have a rectangle with length 9 inches and width 17 inches. We want to find the dimensions of a similar rectangle scaled by 70%. 2. **Formula and explanation:** When two shapes are similar, their corresponding sides are proportional. The scale factor tells us how much to multiply each dimension by. 3. **Calculate the new length:** $$\text{New length} = 9 \times 0.70 = 6.3$$ 4. **Calculate the new width:** $$\text{New width} = 17 \times 0.70 = 11.9$$ 5. **Conclusion:** The dimensions of the similar rectangle are length 6.3 inches and width 11.9 inches.