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Finding the Fourth Proportional to 625,764.59, 863,310.91 and 408,229.00

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Solution

The fourth proportional to 625,764.59, 863,310.91 and 408,229.00 is: 563,196.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,764.59 : 863,310.91 = 408,229.00 : x
  2. Step 2: Convert to fraction form
    625,764.59/863,310.91 = 408,229.00/x
  3. Step 3: Cross multiply
    625,764.59x = 863,310.91 × 408,229.00
  4. Step 4: Simplify right side
    625,764.59x = 352,428,545,161.84
  5. Step 5: Solve for x
    x = 352,428,545,161.84/625,764.59
  6. Step 6: Final answer
    x = 563,196.69

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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.