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Finding the Fourth Proportional to 381,634.60, 572,714.31 and 132,316.60

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Solution

The fourth proportional to 381,634.60, 572,714.31 and 132,316.60 is: 198,565.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,634.60 : 572,714.31 = 132,316.60 : x
  2. Step 2: Convert to fraction form
    381,634.60/572,714.31 = 132,316.60/x
  3. Step 3: Cross multiply
    381,634.60x = 572,714.31 × 132,316.60
  4. Step 4: Simplify right side
    381,634.60x = 75,779,610,270.55
  5. Step 5: Solve for x
    x = 75,779,610,270.55/381,634.60
  6. Step 6: Final answer
    x = 198,565.88

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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.