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Finding the Third Proportional to 31,222 and 47,475

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Solution

The third proportional to 31,222 and 47,475 is: 72,188.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,222 : 47,475 = 47,475 : x
  2. Step 2: Convert to fraction form
    31,222/47,475 = 47,475/x
  3. Step 3: Cross multiply
    31,222x = 47,475 × 47,475
  4. Step 4: Simplify right side
    31,222x = 2,253,875,625
  5. Step 5: Solve for x
    x = 2,253,875,625/31,222
  6. Step 6: Final answer
    x = 72,188.70

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.