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Finding the Fourth Proportional to 27,843.74, 41,690.28 and 20,391.74

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Solution

The fourth proportional to 27,843.74, 41,690.28 and 20,391.74 is: 30,532.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,843.74 : 41,690.28 = 20,391.74 : x
  2. Step 2: Convert to fraction form
    27,843.74/41,690.28 = 20,391.74/x
  3. Step 3: Cross multiply
    27,843.74x = 41,690.28 × 20,391.74
  4. Step 4: Simplify right side
    27,843.74x = 850,137,350.29
  5. Step 5: Solve for x
    x = 850,137,350.29/27,843.74
  6. Step 6: Final answer
    x = 30,532.44

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1.5x scale

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.