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Finding the Fourth Proportional to 187,691.04, 281,502.54 and 75,366.72

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Solution

The fourth proportional to 187,691.04, 281,502.54 and 75,366.72 is: 113,036.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,691.04 : 281,502.54 = 75,366.72 : x
  2. Step 2: Convert to fraction form
    187,691.04/281,502.54 = 75,366.72/x
  3. Step 3: Cross multiply
    187,691.04x = 281,502.54 × 75,366.72
  4. Step 4: Simplify right side
    187,691.04x = 21,215,923,111.47
  5. Step 5: Solve for x
    x = 21,215,923,111.47/187,691.04
  6. Step 6: Final answer
    x = 113,036.42

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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.