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Finding the Fourth Proportional to 60,993.72, 91,454.43 and 18,861.33

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Solution

The fourth proportional to 60,993.72, 91,454.43 and 18,861.33 is: 28,280.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,993.72 : 91,454.43 = 18,861.33 : x
  2. Step 2: Convert to fraction form
    60,993.72/91,454.43 = 18,861.33/x
  3. Step 3: Cross multiply
    60,993.72x = 91,454.43 × 18,861.33
  4. Step 4: Simplify right side
    60,993.72x = 1,724,951,726.92
  5. Step 5: Solve for x
    x = 1,724,951,726.92/60,993.72
  6. Step 6: Final answer
    x = 28,280.81

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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.