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Finding the Fourth Proportional to 167,662.38, 251,489.90 and 78,866.66

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Solution

The fourth proportional to 167,662.38, 251,489.90 and 78,866.66 is: 118,298.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,662.38 : 251,489.90 = 78,866.66 : x
  2. Step 2: Convert to fraction form
    167,662.38/251,489.90 = 78,866.66/x
  3. Step 3: Cross multiply
    167,662.38x = 251,489.90 × 78,866.66
  4. Step 4: Simplify right side
    167,662.38x = 19,834,168,436.73
  5. Step 5: Solve for x
    x = 19,834,168,436.73/167,662.38
  6. Step 6: Final answer
    x = 118,298.26

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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.