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Finding the Fourth Proportional to 118,892.67, 164,044.94 and 80,657.43

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Solution

The fourth proportional to 118,892.67, 164,044.94 and 80,657.43 is: 111,288.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,892.67 : 164,044.94 = 80,657.43 : x
  2. Step 2: Convert to fraction form
    118,892.67/164,044.94 = 80,657.43/x
  3. Step 3: Cross multiply
    118,892.67x = 164,044.94 × 80,657.43
  4. Step 4: Simplify right side
    118,892.67x = 13,231,442,861.62
  5. Step 5: Solve for x
    x = 13,231,442,861.62/118,892.67
  6. Step 6: Final answer
    x = 111,288.97

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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.