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Finding the Fourth Proportional to 62,381.76, 86,062.24 and 39,714.88

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Solution

The fourth proportional to 62,381.76, 86,062.24 and 39,714.88 is: 54,790.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,381.76 : 86,062.24 = 39,714.88 : x
  2. Step 2: Convert to fraction form
    62,381.76/86,062.24 = 39,714.88/x
  3. Step 3: Cross multiply
    62,381.76x = 86,062.24 × 39,714.88
  4. Step 4: Simplify right side
    62,381.76x = 3,417,951,534.13
  5. Step 5: Solve for x
    x = 3,417,951,534.13/62,381.76
  6. Step 6: Final answer
    x = 54,790.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.