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Finding the Fourth Proportional to 11,993.87, 17,990.97 and 3,673.98

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Solution

The fourth proportional to 11,993.87, 17,990.97 and 3,673.98 is: 5,511.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.87 : 17,990.97 = 3,673.98 : x
  2. Step 2: Convert to fraction form
    11,993.87/17,990.97 = 3,673.98/x
  3. Step 3: Cross multiply
    11,993.87x = 17,990.97 × 3,673.98
  4. Step 4: Simplify right side
    11,993.87x = 66,098,463.96
  5. Step 5: Solve for x
    x = 66,098,463.96/11,993.87
  6. Step 6: Final answer
    x = 5,511.02

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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.