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Finding the Fourth Proportional to 57,956.70, 86,939.10 and 22,891.80

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Solution

The fourth proportional to 57,956.70, 86,939.10 and 22,891.80 is: 34,339.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,956.70 : 86,939.10 = 22,891.80 : x
  2. Step 2: Convert to fraction form
    57,956.70/86,939.10 = 22,891.80/x
  3. Step 3: Cross multiply
    57,956.70x = 86,939.10 × 22,891.80
  4. Step 4: Simplify right side
    57,956.70x = 1,990,192,489.38
  5. Step 5: Solve for x
    x = 1,990,192,489.38/57,956.70
  6. Step 6: Final answer
    x = 34,339.30

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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.