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Finding the Fourth Proportional to 67,230.51, 100,879.79 and 27,815.91

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Solution

The fourth proportional to 67,230.51, 100,879.79 and 27,815.91 is: 41,737.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,230.51 : 100,879.79 = 27,815.91 : x
  2. Step 2: Convert to fraction form
    67,230.51/100,879.79 = 27,815.91/x
  3. Step 3: Cross multiply
    67,230.51x = 100,879.79 × 27,815.91
  4. Step 4: Simplify right side
    67,230.51x = 2,806,063,020.38
  5. Step 5: Solve for x
    x = 2,806,063,020.38/67,230.51
  6. Step 6: Final answer
    x = 41,737.94

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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.