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Finding the Fourth Proportional to 12,474.25, 18,711.39 and 3,240.25

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Solution

The fourth proportional to 12,474.25, 18,711.39 and 3,240.25 is: 4,860.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.25 : 18,711.39 = 3,240.25 : x
  2. Step 2: Convert to fraction form
    12,474.25/18,711.39 = 3,240.25/x
  3. Step 3: Cross multiply
    12,474.25x = 18,711.39 × 3,240.25
  4. Step 4: Simplify right side
    12,474.25x = 60,629,581.45
  5. Step 5: Solve for x
    x = 60,629,581.45/12,474.25
  6. Step 6: Final answer
    x = 4,860.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.