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Finding the Fourth Proportional to 57,561.60, 86,229.40 and 51,292.20

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Solution

The fourth proportional to 57,561.60, 86,229.40 and 51,292.20 is: 76,837.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,561.60 : 86,229.40 = 51,292.20 : x
  2. Step 2: Convert to fraction form
    57,561.60/86,229.40 = 51,292.20/x
  3. Step 3: Cross multiply
    57,561.60x = 86,229.40 × 51,292.20
  4. Step 4: Simplify right side
    57,561.60x = 4,422,895,630.68
  5. Step 5: Solve for x
    x = 4,422,895,630.68/57,561.60
  6. Step 6: Final answer
    x = 76,837.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.