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Finding the Third Proportional to 2,640.09 and 4,121.44

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Solution

The third proportional to 2,640.09 and 4,121.44 is: 6,433.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.09 : 4,121.44 = 4,121.44 : x
  2. Step 2: Convert to fraction form
    2,640.09/4,121.44 = 4,121.44/x
  3. Step 3: Cross multiply
    2,640.09x = 4,121.44 × 4,121.44
  4. Step 4: Simplify right side
    2,640.09x = 16,986,247.07
  5. Step 5: Solve for x
    x = 16,986,247.07/2,640.09
  6. Step 6: Final answer
    x = 6,433.96

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These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.