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Finding the Fourth Proportional to 18,651.98, 27,938.93 and 11,252.53

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Solution

The fourth proportional to 18,651.98, 27,938.93 and 11,252.53 is: 16,855.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.98 : 27,938.93 = 11,252.53 : x
  2. Step 2: Convert to fraction form
    18,651.98/27,938.93 = 11,252.53/x
  3. Step 3: Cross multiply
    18,651.98x = 27,938.93 × 11,252.53
  4. Step 4: Simplify right side
    18,651.98x = 314,383,508.30
  5. Step 5: Solve for x
    x = 314,383,508.30/18,651.98
  6. Step 6: Final answer
    x = 16,855.24

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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.