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Finding the Fourth Proportional to 2,251.99, 3,107.87 and 1,257.51

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Solution

The fourth proportional to 2,251.99, 3,107.87 and 1,257.51 is: 1,735.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.99 : 3,107.87 = 1,257.51 : x
  2. Step 2: Convert to fraction form
    2,251.99/3,107.87 = 1,257.51/x
  3. Step 3: Cross multiply
    2,251.99x = 3,107.87 × 1,257.51
  4. Step 4: Simplify right side
    2,251.99x = 3,908,177.60
  5. Step 5: Solve for x
    x = 3,908,177.60/2,251.99
  6. Step 6: Final answer
    x = 1,735.43

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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.