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Finding the Fourth Proportional to 580,089.50, 800,670.62 and 396,402.41

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Solution

The fourth proportional to 580,089.50, 800,670.62 and 396,402.41 is: 547,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,089.50 : 800,670.62 = 396,402.41 : x
  2. Step 2: Convert to fraction form
    580,089.50/800,670.62 = 396,402.41/x
  3. Step 3: Cross multiply
    580,089.50x = 800,670.62 × 396,402.41
  4. Step 4: Simplify right side
    580,089.50x = 317,387,761,873.11
  5. Step 5: Solve for x
    x = 317,387,761,873.11/580,089.50
  6. Step 6: Final answer
    x = 547,135.85

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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.