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Finding the Fourth Proportional to 18,168,943.20, 27,253,414.80 and 14,137,864.80

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Solution

The fourth proportional to 18,168,943.20, 27,253,414.80 and 14,137,864.80 is: 21,206,797.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,168,943.20 : 27,253,414.80 = 14,137,864.80 : x
  2. Step 2: Convert to fraction form
    18,168,943.20/27,253,414.80 = 14,137,864.80/x
  3. Step 3: Cross multiply
    18,168,943.20x = 27,253,414.80 × 14,137,864.80
  4. Step 4: Simplify right side
    18,168,943.20x = 385,305,093,780,719.06
  5. Step 5: Solve for x
    x = 385,305,093,780,719.06/18,168,943.20
  6. Step 6: Final answer
    x = 21,206,797.20

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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.