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Finding the Fourth Proportional to 18,508,983.20, 27,751,033.20 and 9,874,512.80

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Solution

The fourth proportional to 18,508,983.20, 27,751,033.20 and 9,874,512.80 is: 14,805,131.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508,983.20 : 27,751,033.20 = 9,874,512.80 : x
  2. Step 2: Convert to fraction form
    18,508,983.20/27,751,033.20 = 9,874,512.80/x
  3. Step 3: Cross multiply
    18,508,983.20x = 27,751,033.20 × 9,874,512.80
  4. Step 4: Simplify right side
    18,508,983.20x = 274,027,932,546,624.97
  5. Step 5: Solve for x
    x = 274,027,932,546,624.97/18,508,983.20
  6. Step 6: Final answer
    x = 14,805,131.63

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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.