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Finding the Fourth Proportional to 352,643.22, 527,794.92 and 321,125.85

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Solution

The fourth proportional to 352,643.22, 527,794.92 and 321,125.85 is: 480,623.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,643.22 : 527,794.92 = 321,125.85 : x
  2. Step 2: Convert to fraction form
    352,643.22/527,794.92 = 321,125.85/x
  3. Step 3: Cross multiply
    352,643.22x = 527,794.92 × 321,125.85
  4. Step 4: Simplify right side
    352,643.22x = 169,488,592,310.68
  5. Step 5: Solve for x
    x = 169,488,592,310.68/352,643.22
  6. Step 6: Final answer
    x = 480,623.43

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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.