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Finding the Fourth Proportional to 487,679.30, 731,329.42 and 167,770.42

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Solution

The fourth proportional to 487,679.30, 731,329.42 and 167,770.42 is: 251,590.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,679.30 : 731,329.42 = 167,770.42 : x
  2. Step 2: Convert to fraction form
    487,679.30/731,329.42 = 167,770.42/x
  3. Step 3: Cross multiply
    487,679.30x = 731,329.42 × 167,770.42
  4. Step 4: Simplify right side
    487,679.30x = 122,695,443,951.76
  5. Step 5: Solve for x
    x = 122,695,443,951.76/487,679.30
  6. Step 6: Final answer
    x = 251,590.43

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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.