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Finding the Third Proportional to 47,435 and 71,129

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Solution

The third proportional to 47,435 and 71,129 is: 106,658.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,435 : 71,129 = 71,129 : x
  2. Step 2: Convert to fraction form
    47,435/71,129 = 71,129/x
  3. Step 3: Cross multiply
    47,435x = 71,129 × 71,129
  4. Step 4: Simplify right side
    47,435x = 5,059,334,641
  5. Step 5: Solve for x
    x = 5,059,334,641/47,435
  6. Step 6: Final answer
    x = 106,658.26

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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.