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Finding the Fourth Proportional to 558, 768.24 and 532

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Solution

The fourth proportional to 558, 768.24 and 532 is: 732.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    558 : 768.24 = 532 : x
  2. Step 2: Convert to fraction form
    558/768.24 = 532/x
  3. Step 3: Cross multiply
    558x = 768.24 × 532
  4. Step 4: Simplify right side
    558x = 408,703.68
  5. Step 5: Solve for x
    x = 408,703.68/558
  6. Step 6: Final answer
    x = 732.44

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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.