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Finding the Fourth Proportional to 57,288, 79,057.98 and 32,138.04

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Solution

The fourth proportional to 57,288, 79,057.98 and 32,138.04 is: 44,350.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,288 : 79,057.98 = 32,138.04 : x
  2. Step 2: Convert to fraction form
    57,288/79,057.98 = 32,138.04/x
  3. Step 3: Cross multiply
    57,288x = 79,057.98 × 32,138.04
  4. Step 4: Simplify right side
    57,288x = 2,540,768,523.56
  5. Step 5: Solve for x
    x = 2,540,768,523.56/57,288
  6. Step 6: Final answer
    x = 44,350.80

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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.