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Finding the Fourth Proportional to 57,811.29, 79,757.16 and 36,291.90

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Solution

The fourth proportional to 57,811.29, 79,757.16 and 36,291.90 is: 50,068.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,811.29 : 79,757.16 = 36,291.90 : x
  2. Step 2: Convert to fraction form
    57,811.29/79,757.16 = 36,291.90/x
  3. Step 3: Cross multiply
    57,811.29x = 79,757.16 × 36,291.90
  4. Step 4: Simplify right side
    57,811.29x = 2,894,538,589.36
  5. Step 5: Solve for x
    x = 2,894,538,589.36/57,811.29
  6. Step 6: Final answer
    x = 50,068.74

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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.