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Finding the Third Proportional to 715 and 956.50

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Solution

The third proportional to 715 and 956.50 is: 1,279.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    715 : 956.50 = 956.50 : x
  2. Step 2: Convert to fraction form
    715/956.50 = 956.50/x
  3. Step 3: Cross multiply
    715x = 956.50 × 956.50
  4. Step 4: Simplify right side
    715x = 914,892.25
  5. Step 5: Solve for x
    x = 914,892.25/715
  6. Step 6: Final answer
    x = 1,279.57

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.