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Finding the Fourth Proportional to 3,251.87, 4,486.11 and 2,072.21

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Solution

The fourth proportional to 3,251.87, 4,486.11 and 2,072.21 is: 2,858.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.87 : 4,486.11 = 2,072.21 : x
  2. Step 2: Convert to fraction form
    3,251.87/4,486.11 = 2,072.21/x
  3. Step 3: Cross multiply
    3,251.87x = 4,486.11 × 2,072.21
  4. Step 4: Simplify right side
    3,251.87x = 9,296,173.22
  5. Step 5: Solve for x
    x = 9,296,173.22/3,251.87
  6. Step 6: Final answer
    x = 2,858.71

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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.