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Finding the Fourth Proportional to 57,379.98, 79,177.32 and 33,489.30

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Solution

The fourth proportional to 57,379.98, 79,177.32 and 33,489.30 is: 46,211.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,379.98 : 79,177.32 = 33,489.30 : x
  2. Step 2: Convert to fraction form
    57,379.98/79,177.32 = 33,489.30/x
  3. Step 3: Cross multiply
    57,379.98x = 79,177.32 × 33,489.30
  4. Step 4: Simplify right side
    57,379.98x = 2,651,593,022.68
  5. Step 5: Solve for x
    x = 2,651,593,022.68/57,379.98
  6. Step 6: Final answer
    x = 46,211.12

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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.