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Finding the Fourth Proportional to 175,138.75, 241,691.75 and 99,687.25

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Solution

The fourth proportional to 175,138.75, 241,691.75 and 99,687.25 is: 137,568.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,138.75 : 241,691.75 = 99,687.25 : x
  2. Step 2: Convert to fraction form
    175,138.75/241,691.75 = 99,687.25/x
  3. Step 3: Cross multiply
    175,138.75x = 241,691.75 × 99,687.25
  4. Step 4: Simplify right side
    175,138.75x = 24,093,585,905.19
  5. Step 5: Solve for x
    x = 24,093,585,905.19/175,138.75
  6. Step 6: Final answer
    x = 137,568.56

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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.