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Finding the Third Proportional to 39,753 and 55,107

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Solution

The third proportional to 39,753 and 55,107 is: 76,391.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,753 : 55,107 = 55,107 : x
  2. Step 2: Convert to fraction form
    39,753/55,107 = 55,107/x
  3. Step 3: Cross multiply
    39,753x = 55,107 × 55,107
  4. Step 4: Simplify right side
    39,753x = 3,036,781,449
  5. Step 5: Solve for x
    x = 3,036,781,449/39,753
  6. Step 6: Final answer
    x = 76,391.25

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.