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Finding the Fourth Proportional to 167,978.56, 252,123.36 and 84,930.88

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Solution

The fourth proportional to 167,978.56, 252,123.36 and 84,930.88 is: 127,474.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,978.56 : 252,123.36 = 84,930.88 : x
  2. Step 2: Convert to fraction form
    167,978.56/252,123.36 = 84,930.88/x
  3. Step 3: Cross multiply
    167,978.56x = 252,123.36 × 84,930.88
  4. Step 4: Simplify right side
    167,978.56x = 21,413,058,833.36
  5. Step 5: Solve for x
    x = 21,413,058,833.36/167,978.56
  6. Step 6: Final answer
    x = 127,474.95

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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.