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Finding the Fourth Proportional to 48,679.20, 72,939.60 and 44,013.60

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Solution

The fourth proportional to 48,679.20, 72,939.60 and 44,013.60 is: 65,948.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,679.20 : 72,939.60 = 44,013.60 : x
  2. Step 2: Convert to fraction form
    48,679.20/72,939.60 = 44,013.60/x
  3. Step 3: Cross multiply
    48,679.20x = 72,939.60 × 44,013.60
  4. Step 4: Simplify right side
    48,679.20x = 3,210,334,378.56
  5. Step 5: Solve for x
    x = 3,210,334,378.56/48,679.20
  6. Step 6: Final answer
    x = 65,948.79

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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.