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Finding the Third Proportional to 20,934 and 31,376.25

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Solution

The third proportional to 20,934 and 31,376.25 is: 47,027.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934 : 31,376.25 = 31,376.25 : x
  2. Step 2: Convert to fraction form
    20,934/31,376.25 = 31,376.25/x
  3. Step 3: Cross multiply
    20,934x = 31,376.25 × 31,376.25
  4. Step 4: Simplify right side
    20,934x = 984,469,064.06
  5. Step 5: Solve for x
    x = 984,469,064.06/20,934
  6. Step 6: Final answer
    x = 47,027.28

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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.