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Finding the Fourth Proportional to 392,353.56, 587,000.72 and 343,937.83

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Solution

The fourth proportional to 392,353.56, 587,000.72 and 343,937.83 is: 514,565.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,353.56 : 587,000.72 = 343,937.83 : x
  2. Step 2: Convert to fraction form
    392,353.56/587,000.72 = 343,937.83/x
  3. Step 3: Cross multiply
    392,353.56x = 587,000.72 × 343,937.83
  4. Step 4: Simplify right side
    392,353.56x = 201,891,753,845.24
  5. Step 5: Solve for x
    x = 201,891,753,845.24/392,353.56
  6. Step 6: Final answer
    x = 514,565.88

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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.