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Finding the Fourth Proportional to 57,474.46, 79,311.90 and 31,982.32

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Solution

The fourth proportional to 57,474.46, 79,311.90 and 31,982.32 is: 44,134.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,474.46 : 79,311.90 = 31,982.32 : x
  2. Step 2: Convert to fraction form
    57,474.46/79,311.90 = 31,982.32/x
  3. Step 3: Cross multiply
    57,474.46x = 79,311.90 × 31,982.32
  4. Step 4: Simplify right side
    57,474.46x = 2,536,578,565.61
  5. Step 5: Solve for x
    x = 2,536,578,565.61/57,474.46
  6. Step 6: Final answer
    x = 44,134.01

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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.