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Finding the Fourth Proportional to 18,498,502.80, 27,747,754.20 and 18,179,638.20

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Solution

The fourth proportional to 18,498,502.80, 27,747,754.20 and 18,179,638.20 is: 27,269,457.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,498,502.80 : 27,747,754.20 = 18,179,638.20 : x
  2. Step 2: Convert to fraction form
    18,498,502.80/27,747,754.20 = 18,179,638.20/x
  3. Step 3: Cross multiply
    18,498,502.80x = 27,747,754.20 × 18,179,638.20
  4. Step 4: Simplify right side
    18,498,502.80x = 504,444,132,218,530.38
  5. Step 5: Solve for x
    x = 504,444,132,218,530.38/18,498,502.80
  6. Step 6: Final answer
    x = 27,269,457.30

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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.