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Finding the Fourth Proportional to 57,811.73, 79,711.29 and 48,265.47

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Solution

The fourth proportional to 57,811.73, 79,711.29 and 48,265.47 is: 66,548.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,811.73 : 79,711.29 = 48,265.47 : x
  2. Step 2: Convert to fraction form
    57,811.73/79,711.29 = 48,265.47/x
  3. Step 3: Cross multiply
    57,811.73x = 79,711.29 × 48,265.47
  4. Step 4: Simplify right side
    57,811.73x = 3,847,302,876.16
  5. Step 5: Solve for x
    x = 3,847,302,876.16/57,811.73
  6. Step 6: Final answer
    x = 66,548.83

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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.