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Finding the Fourth Proportional to 173,640.60, 261,044.10 and 147,979.80

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Solution

The fourth proportional to 173,640.60, 261,044.10 and 147,979.80 is: 222,466.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,640.60 : 261,044.10 = 147,979.80 : x
  2. Step 2: Convert to fraction form
    173,640.60/261,044.10 = 147,979.80/x
  3. Step 3: Cross multiply
    173,640.60x = 261,044.10 × 147,979.80
  4. Step 4: Simplify right side
    173,640.60x = 38,629,253,709.18
  5. Step 5: Solve for x
    x = 38,629,253,709.18/173,640.60
  6. Step 6: Final answer
    x = 222,466.71

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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.