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Finding the Fourth Proportional to 57,891.27, 79,900.11 and 33,689.70

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Solution

The fourth proportional to 57,891.27, 79,900.11 and 33,689.70 is: 46,497.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,891.27 : 79,900.11 = 33,689.70 : x
  2. Step 2: Convert to fraction form
    57,891.27/79,900.11 = 33,689.70/x
  3. Step 3: Cross multiply
    57,891.27x = 79,900.11 × 33,689.70
  4. Step 4: Simplify right side
    57,891.27x = 2,691,810,735.87
  5. Step 5: Solve for x
    x = 2,691,810,735.87/57,891.27
  6. Step 6: Final answer
    x = 46,497.70

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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.