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Finding the Fourth Proportional to 61,481.80, 92,222.70 and 57,545.20

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Solution

The fourth proportional to 61,481.80, 92,222.70 and 57,545.20 is: 86,317.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,481.80 : 92,222.70 = 57,545.20 : x
  2. Step 2: Convert to fraction form
    61,481.80/92,222.70 = 57,545.20/x
  3. Step 3: Cross multiply
    61,481.80x = 92,222.70 × 57,545.20
  4. Step 4: Simplify right side
    61,481.80x = 5,306,973,716.04
  5. Step 5: Solve for x
    x = 5,306,973,716.04/61,481.80
  6. Step 6: Final answer
    x = 86,317.80

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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.