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Finding the Fourth Proportional to 60,517.56, 90,700.02 and 42,991.32

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Solution

The fourth proportional to 60,517.56, 90,700.02 and 42,991.32 is: 64,432.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,517.56 : 90,700.02 = 42,991.32 : x
  2. Step 2: Convert to fraction form
    60,517.56/90,700.02 = 42,991.32/x
  3. Step 3: Cross multiply
    60,517.56x = 90,700.02 × 42,991.32
  4. Step 4: Simplify right side
    60,517.56x = 3,899,313,583.83
  5. Step 5: Solve for x
    x = 3,899,313,583.83/60,517.56
  6. Step 6: Final answer
    x = 64,432.76

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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.