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Finding the Third Proportional to 2,766.66 and 3,890.53

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Solution

The third proportional to 2,766.66 and 3,890.53 is: 5,470.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.66 : 3,890.53 = 3,890.53 : x
  2. Step 2: Convert to fraction form
    2,766.66/3,890.53 = 3,890.53/x
  3. Step 3: Cross multiply
    2,766.66x = 3,890.53 × 3,890.53
  4. Step 4: Simplify right side
    2,766.66x = 15,136,233.41
  5. Step 5: Solve for x
    x = 15,136,233.41/2,766.66
  6. Step 6: Final answer
    x = 5,470.95

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.