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Finding the Fourth Proportional to 67,290.86, 100,948.18 and 27,825.86

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Solution

The fourth proportional to 67,290.86, 100,948.18 and 27,825.86 is: 41,743.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,290.86 : 100,948.18 = 27,825.86 : x
  2. Step 2: Convert to fraction form
    67,290.86/100,948.18 = 27,825.86/x
  3. Step 3: Cross multiply
    67,290.86x = 100,948.18 × 27,825.86
  4. Step 4: Simplify right side
    67,290.86x = 2,808,969,923.93
  5. Step 5: Solve for x
    x = 2,808,969,923.93/67,290.86
  6. Step 6: Final answer
    x = 41,743.71

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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.