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Finding the Fourth Proportional to 381,662.10, 572,755.50 and 132,344.10

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Solution

The fourth proportional to 381,662.10, 572,755.50 and 132,344.10 is: 198,607.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,662.10 : 572,755.50 = 132,344.10 : x
  2. Step 2: Convert to fraction form
    381,662.10/572,755.50 = 132,344.10/x
  3. Step 3: Cross multiply
    381,662.10x = 572,755.50 × 132,344.10
  4. Step 4: Simplify right side
    381,662.10x = 75,800,811,167.55
  5. Step 5: Solve for x
    x = 75,800,811,167.55/381,662.10
  6. Step 6: Final answer
    x = 198,607.12

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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.