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Finding the Fourth Proportional to 186,519.87, 279,721.49 and 81,232.83

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Solution

The fourth proportional to 186,519.87, 279,721.49 and 81,232.83 is: 121,823.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,519.87 : 279,721.49 = 81,232.83 : x
  2. Step 2: Convert to fraction form
    186,519.87/279,721.49 = 81,232.83/x
  3. Step 3: Cross multiply
    186,519.87x = 279,721.49 × 81,232.83
  4. Step 4: Simplify right side
    186,519.87x = 22,722,567,838.35
  5. Step 5: Solve for x
    x = 22,722,567,838.35/186,519.87
  6. Step 6: Final answer
    x = 121,823.85

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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.