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Finding the Fourth Proportional to 521,891.87, 781,508.86 and 343,859.14

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Solution

The fourth proportional to 521,891.87, 781,508.86 and 343,859.14 is: 514,913.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,891.87 : 781,508.86 = 343,859.14 : x
  2. Step 2: Convert to fraction form
    521,891.87/781,508.86 = 343,859.14/x
  3. Step 3: Cross multiply
    521,891.87x = 781,508.86 × 343,859.14
  4. Step 4: Simplify right side
    521,891.87x = 268,728,964,501.98
  5. Step 5: Solve for x
    x = 268,728,964,501.98/521,891.87
  6. Step 6: Final answer
    x = 514,913.11

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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.