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Finding the Fourth Proportional to 694,229.16, 958,023.56 and 392,423.16

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Solution

The fourth proportional to 694,229.16, 958,023.56 and 392,423.16 is: 541,536.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,229.16 : 958,023.56 = 392,423.16 : x
  2. Step 2: Convert to fraction form
    694,229.16/958,023.56 = 392,423.16/x
  3. Step 3: Cross multiply
    694,229.16x = 958,023.56 × 392,423.16
  4. Step 4: Simplify right side
    694,229.16x = 375,950,632,769.65
  5. Step 5: Solve for x
    x = 375,950,632,769.65/694,229.16
  6. Step 6: Final answer
    x = 541,536.79

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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.