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Finding the Third Proportional to 2,931 and 3,383.25

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Solution

The third proportional to 2,931 and 3,383.25 is: 3,905.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931 : 3,383.25 = 3,383.25 : x
  2. Step 2: Convert to fraction form
    2,931/3,383.25 = 3,383.25/x
  3. Step 3: Cross multiply
    2,931x = 3,383.25 × 3,383.25
  4. Step 4: Simplify right side
    2,931x = 11,446,380.56
  5. Step 5: Solve for x
    x = 11,446,380.56/2,931
  6. Step 6: Final answer
    x = 3,905.28

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.