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Finding the Fourth Proportional to 372,398.73, 558,597.24 and 135,644.64

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Solution

The fourth proportional to 372,398.73, 558,597.24 and 135,644.64 is: 203,466.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,398.73 : 558,597.24 = 135,644.64 : x
  2. Step 2: Convert to fraction form
    372,398.73/558,597.24 = 135,644.64/x
  3. Step 3: Cross multiply
    372,398.73x = 558,597.24 × 135,644.64
  4. Step 4: Simplify right side
    372,398.73x = 75,770,721,524.79
  5. Step 5: Solve for x
    x = 75,770,721,524.79/372,398.73
  6. Step 6: Final answer
    x = 203,466.65

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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.