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Finding the Fourth Proportional to 18,491.82, 27,737.72 and 16,888.02

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Solution

The fourth proportional to 18,491.82, 27,737.72 and 16,888.02 is: 25,332.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.82 : 27,737.72 = 16,888.02 : x
  2. Step 2: Convert to fraction form
    18,491.82/27,737.72 = 16,888.02/x
  3. Step 3: Cross multiply
    18,491.82x = 27,737.72 × 16,888.02
  4. Step 4: Simplify right side
    18,491.82x = 468,435,170.11
  5. Step 5: Solve for x
    x = 468,435,170.11/18,491.82
  6. Step 6: Final answer
    x = 25,332.02

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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.