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Finding the Third Proportional to 38,991.75 and 54,327

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Solution

The third proportional to 38,991.75 and 54,327 is: 75,693.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,991.75 : 54,327 = 54,327 : x
  2. Step 2: Convert to fraction form
    38,991.75/54,327 = 54,327/x
  3. Step 3: Cross multiply
    38,991.75x = 54,327 × 54,327
  4. Step 4: Simplify right side
    38,991.75x = 2,951,422,929
  5. Step 5: Solve for x
    x = 2,951,422,929/38,991.75
  6. Step 6: Final answer
    x = 75,693.52

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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.