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Finding the Third Proportional to 10,613 and 15,916

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Solution

The third proportional to 10,613 and 15,916 is: 23,868.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,613 : 15,916 = 15,916 : x
  2. Step 2: Convert to fraction form
    10,613/15,916 = 15,916/x
  3. Step 3: Cross multiply
    10,613x = 15,916 × 15,916
  4. Step 4: Simplify right side
    10,613x = 253,319,056
  5. Step 5: Solve for x
    x = 253,319,056/10,613
  6. Step 6: Final answer
    x = 23,868.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.