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Finding the Fourth Proportional to 60,491.20, 90,736.80 and 44,939.20

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Solution

The fourth proportional to 60,491.20, 90,736.80 and 44,939.20 is: 67,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,491.20 : 90,736.80 = 44,939.20 : x
  2. Step 2: Convert to fraction form
    60,491.20/90,736.80 = 44,939.20/x
  3. Step 3: Cross multiply
    60,491.20x = 90,736.80 × 44,939.20
  4. Step 4: Simplify right side
    60,491.20x = 4,077,639,202.56
  5. Step 5: Solve for x
    x = 4,077,639,202.56/60,491.20
  6. Step 6: Final answer
    x = 67,408.80

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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.