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Finding the Fourth Proportional to 167,398.98, 230,974.65 and 99,438.87

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Solution

The fourth proportional to 167,398.98, 230,974.65 and 99,438.87 is: 137,204.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,398.98 : 230,974.65 = 99,438.87 : x
  2. Step 2: Convert to fraction form
    167,398.98/230,974.65 = 99,438.87/x
  3. Step 3: Cross multiply
    167,398.98x = 230,974.65 × 99,438.87
  4. Step 4: Simplify right side
    167,398.98x = 22,967,857,251.79
  5. Step 5: Solve for x
    x = 22,967,857,251.79/167,398.98
  6. Step 6: Final answer
    x = 137,204.29

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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.