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Finding the Fourth Proportional to 567,658.61, 851,487.91 and 389,625.87

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Solution

The fourth proportional to 567,658.61, 851,487.91 and 389,625.87 is: 584,438.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,658.61 : 851,487.91 = 389,625.87 : x
  2. Step 2: Convert to fraction form
    567,658.61/851,487.91 = 389,625.87/x
  3. Step 3: Cross multiply
    567,658.61x = 851,487.91 × 389,625.87
  4. Step 4: Simplify right side
    567,658.61x = 331,761,719,947.25
  5. Step 5: Solve for x
    x = 331,761,719,947.25/567,658.61
  6. Step 6: Final answer
    x = 584,438.81

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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.