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Finding the Fourth Proportional to 263,085.71, 394,505.87 and 136,691.97

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Solution

The fourth proportional to 263,085.71, 394,505.87 and 136,691.97 is: 204,974.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,085.71 : 394,505.87 = 136,691.97 : x
  2. Step 2: Convert to fraction form
    263,085.71/394,505.87 = 136,691.97/x
  3. Step 3: Cross multiply
    263,085.71x = 394,505.87 × 136,691.97
  4. Step 4: Simplify right side
    263,085.71x = 53,925,783,863.40
  5. Step 5: Solve for x
    x = 53,925,783,863.40/263,085.71
  6. Step 6: Final answer
    x = 204,974.21

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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.