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Finding the Fourth Proportional to 57,418.88, 79,240.68 and 31,927.85

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Solution

The fourth proportional to 57,418.88, 79,240.68 and 31,927.85 is: 44,061.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,418.88 : 79,240.68 = 31,927.85 : x
  2. Step 2: Convert to fraction form
    57,418.88/79,240.68 = 31,927.85/x
  3. Step 3: Cross multiply
    57,418.88x = 79,240.68 × 31,927.85
  4. Step 4: Simplify right side
    57,418.88x = 2,529,984,148.73
  5. Step 5: Solve for x
    x = 2,529,984,148.73/57,418.88
  6. Step 6: Final answer
    x = 44,061.89

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1.5x scale

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.