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Finding the Third Proportional to 885 and 2,145

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Solution

The third proportional to 885 and 2,145 is: 5,198.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    885 : 2,145 = 2,145 : x
  2. Step 2: Convert to fraction form
    885/2,145 = 2,145/x
  3. Step 3: Cross multiply
    885x = 2,145 × 2,145
  4. Step 4: Simplify right side
    885x = 4,601,025
  5. Step 5: Solve for x
    x = 4,601,025/885
  6. Step 6: Final answer
    x = 5,198.90

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These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.