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Finding the Fourth Proportional to 67,394.40, 100,891.92 and 49,942.56

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Solution

The fourth proportional to 67,394.40, 100,891.92 and 49,942.56 is: 74,765.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,394.40 : 100,891.92 = 49,942.56 : x
  2. Step 2: Convert to fraction form
    67,394.40/100,891.92 = 49,942.56/x
  3. Step 3: Cross multiply
    67,394.40x = 100,891.92 × 49,942.56
  4. Step 4: Simplify right side
    67,394.40x = 5,038,800,768.12
  5. Step 5: Solve for x
    x = 5,038,800,768.12/67,394.40
  6. Step 6: Final answer
    x = 74,765.87

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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.