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Finding the Fourth Proportional to 85,843.94, 128,793.92 and 41,475.78

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Solution

The fourth proportional to 85,843.94, 128,793.92 and 41,475.78 is: 62,227.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,843.94 : 128,793.92 = 41,475.78 : x
  2. Step 2: Convert to fraction form
    85,843.94/128,793.92 = 41,475.78/x
  3. Step 3: Cross multiply
    85,843.94x = 128,793.92 × 41,475.78
  4. Step 4: Simplify right side
    85,843.94x = 5,341,828,083.88
  5. Step 5: Solve for x
    x = 5,341,828,083.88/85,843.94
  6. Step 6: Final answer
    x = 62,227.20

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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.