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Finding the Fourth Proportional to 203,704.52, 281,107.98 and 113,055.21

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Solution

The fourth proportional to 203,704.52, 281,107.98 and 113,055.21 is: 156,013.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,704.52 : 281,107.98 = 113,055.21 : x
  2. Step 2: Convert to fraction form
    203,704.52/281,107.98 = 113,055.21/x
  3. Step 3: Cross multiply
    203,704.52x = 281,107.98 × 113,055.21
  4. Step 4: Simplify right side
    203,704.52x = 31,780,721,711.58
  5. Step 5: Solve for x
    x = 31,780,721,711.58/203,704.52
  6. Step 6: Final answer
    x = 156,013.83

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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.