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Finding the Fourth Proportional to 11,993.67, 17,990.67 and 3,673.77

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Solution

The fourth proportional to 11,993.67, 17,990.67 and 3,673.77 is: 5,510.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.67 : 17,990.67 = 3,673.77 : x
  2. Step 2: Convert to fraction form
    11,993.67/17,990.67 = 3,673.77/x
  3. Step 3: Cross multiply
    11,993.67x = 17,990.67 × 3,673.77
  4. Step 4: Simplify right side
    11,993.67x = 66,093,583.73
  5. Step 5: Solve for x
    x = 66,093,583.73/11,993.67
  6. Step 6: Final answer
    x = 5,510.71

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1.5x scale

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.