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Finding the Third Proportional to 38,985 and 50,691

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Solution

The third proportional to 38,985 and 50,691 is: 65,911.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985 : 50,691 = 50,691 : x
  2. Step 2: Convert to fraction form
    38,985/50,691 = 50,691/x
  3. Step 3: Cross multiply
    38,985x = 50,691 × 50,691
  4. Step 4: Simplify right side
    38,985x = 2,569,577,481
  5. Step 5: Solve for x
    x = 2,569,577,481/38,985
  6. Step 6: Final answer
    x = 65,911.95

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.