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Finding the Fourth Proportional to 71,437.53, 107,134.41 and 49,392.57

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Solution

The fourth proportional to 71,437.53, 107,134.41 and 49,392.57 is: 74,073.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,437.53 : 107,134.41 = 49,392.57 : x
  2. Step 2: Convert to fraction form
    71,437.53/107,134.41 = 49,392.57/x
  3. Step 3: Cross multiply
    71,437.53x = 107,134.41 × 49,392.57
  4. Step 4: Simplify right side
    71,437.53x = 5,291,643,845.33
  5. Step 5: Solve for x
    x = 5,291,643,845.33/71,437.53
  6. Step 6: Final answer
    x = 74,073.72

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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.