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Finding the Fourth Proportional to 57,990.46, 80,025.50 and 34,111.90

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Solution

The fourth proportional to 57,990.46, 80,025.50 and 34,111.90 is: 47,073.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,990.46 : 80,025.50 = 34,111.90 : x
  2. Step 2: Convert to fraction form
    57,990.46/80,025.50 = 34,111.90/x
  3. Step 3: Cross multiply
    57,990.46x = 80,025.50 × 34,111.90
  4. Step 4: Simplify right side
    57,990.46x = 2,729,821,853.45
  5. Step 5: Solve for x
    x = 2,729,821,853.45/57,990.46
  6. Step 6: Final answer
    x = 47,073.64

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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.