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Finding the Fourth Proportional to 172,662.40, 238,310.85 and 116,040.97

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Solution

The fourth proportional to 172,662.40, 238,310.85 and 116,040.97 is: 160,161.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,662.40 : 238,310.85 = 116,040.97 : x
  2. Step 2: Convert to fraction form
    172,662.40/238,310.85 = 116,040.97/x
  3. Step 3: Cross multiply
    172,662.40x = 238,310.85 × 116,040.97
  4. Step 4: Simplify right side
    172,662.40x = 27,653,822,195.52
  5. Step 5: Solve for x
    x = 27,653,822,195.52/172,662.40
  6. Step 6: Final answer
    x = 160,161.23

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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.