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Finding the Fourth Proportional to 67,081.66, 100,668.66 and 27,638.71

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Solution

The fourth proportional to 67,081.66, 100,668.66 and 27,638.71 is: 41,477.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,081.66 : 100,668.66 = 27,638.71 : x
  2. Step 2: Convert to fraction form
    67,081.66/100,668.66 = 27,638.71/x
  3. Step 3: Cross multiply
    67,081.66x = 100,668.66 × 27,638.71
  4. Step 4: Simplify right side
    67,081.66x = 2,782,351,899.83
  5. Step 5: Solve for x
    x = 2,782,351,899.83/67,081.66
  6. Step 6: Final answer
    x = 41,477.09

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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.