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Finding the Third Proportional to 5,728 and 9,402

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Solution

The third proportional to 5,728 and 9,402 is: 15,432.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,728 : 9,402 = 9,402 : x
  2. Step 2: Convert to fraction form
    5,728/9,402 = 9,402/x
  3. Step 3: Cross multiply
    5,728x = 9,402 × 9,402
  4. Step 4: Simplify right side
    5,728x = 88,397,604
  5. Step 5: Solve for x
    x = 88,397,604/5,728
  6. Step 6: Final answer
    x = 15,432.54

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.