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Finding the Third Proportional to 3,212 and 6,916

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Solution

The third proportional to 3,212 and 6,916 is: 14,891.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212 : 6,916 = 6,916 : x
  2. Step 2: Convert to fraction form
    3,212/6,916 = 6,916/x
  3. Step 3: Cross multiply
    3,212x = 6,916 × 6,916
  4. Step 4: Simplify right side
    3,212x = 47,831,056
  5. Step 5: Solve for x
    x = 47,831,056/3,212
  6. Step 6: Final answer
    x = 14,891.36

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.