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Finding the Third Proportional to 3,285 and 6,891

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Solution

The third proportional to 3,285 and 6,891 is: 14,455.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285 : 6,891 = 6,891 : x
  2. Step 2: Convert to fraction form
    3,285/6,891 = 6,891/x
  3. Step 3: Cross multiply
    3,285x = 6,891 × 6,891
  4. Step 4: Simplify right side
    3,285x = 47,485,881
  5. Step 5: Solve for x
    x = 47,485,881/3,285
  6. Step 6: Final answer
    x = 14,455.37

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These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.