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Finding the Fourth Proportional to 167,938.80, 251,908.20 and 74,444.55

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Solution

The fourth proportional to 167,938.80, 251,908.20 and 74,444.55 is: 111,666.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,938.80 : 251,908.20 = 74,444.55 : x
  2. Step 2: Convert to fraction form
    167,938.80/251,908.20 = 74,444.55/x
  3. Step 3: Cross multiply
    167,938.80x = 251,908.20 × 74,444.55
  4. Step 4: Simplify right side
    167,938.80x = 18,753,192,590.31
  5. Step 5: Solve for x
    x = 18,753,192,590.31/167,938.80
  6. Step 6: Final answer
    x = 111,666.83

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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.