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Finding the Fourth Proportional to 57,429.59, 79,254.80 and 31,943.15

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Solution

The fourth proportional to 57,429.59, 79,254.80 and 31,943.15 is: 44,082.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,429.59 : 79,254.80 = 31,943.15 : x
  2. Step 2: Convert to fraction form
    57,429.59/79,254.80 = 31,943.15/x
  3. Step 3: Cross multiply
    57,429.59x = 79,254.80 × 31,943.15
  4. Step 4: Simplify right side
    57,429.59x = 2,531,647,408.63
  5. Step 5: Solve for x
    x = 2,531,647,408.63/57,429.59
  6. Step 6: Final answer
    x = 44,082.63

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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.