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Finding the Fourth Proportional to 238,694.97, 329,305.83 and 136,665.90

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Solution

The fourth proportional to 238,694.97, 329,305.83 and 136,665.90 is: 188,545.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,694.97 : 329,305.83 = 136,665.90 : x
  2. Step 2: Convert to fraction form
    238,694.97/329,305.83 = 136,665.90/x
  3. Step 3: Cross multiply
    238,694.97x = 329,305.83 × 136,665.90
  4. Step 4: Simplify right side
    238,694.97x = 45,004,877,632.20
  5. Step 5: Solve for x
    x = 45,004,877,632.20/238,694.97
  6. Step 6: Final answer
    x = 188,545.56

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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.