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Finding the Fourth Proportional to 74,951.56, 103,439.70 and 41,424.04

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Solution

The fourth proportional to 74,951.56, 103,439.70 and 41,424.04 is: 57,168.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,951.56 : 103,439.70 = 41,424.04 : x
  2. Step 2: Convert to fraction form
    74,951.56/103,439.70 = 41,424.04/x
  3. Step 3: Cross multiply
    74,951.56x = 103,439.70 × 41,424.04
  4. Step 4: Simplify right side
    74,951.56x = 4,284,890,270.39
  5. Step 5: Solve for x
    x = 4,284,890,270.39/74,951.56
  6. Step 6: Final answer
    x = 57,168.79

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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.