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Finding the Fourth Proportional to 3,759.91, 5,188.97 and 2,188.30

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Solution

The fourth proportional to 3,759.91, 5,188.97 and 2,188.30 is: 3,020.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.91 : 5,188.97 = 2,188.30 : x
  2. Step 2: Convert to fraction form
    3,759.91/5,188.97 = 2,188.30/x
  3. Step 3: Cross multiply
    3,759.91x = 5,188.97 × 2,188.30
  4. Step 4: Simplify right side
    3,759.91x = 11,355,023.05
  5. Step 5: Solve for x
    x = 11,355,023.05/3,759.91
  6. Step 6: Final answer
    x = 3,020.03

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.