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Finding the Third Proportional to 3,984 and 7,167

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Solution

The third proportional to 3,984 and 7,167 is: 12,893.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984 : 7,167 = 7,167 : x
  2. Step 2: Convert to fraction form
    3,984/7,167 = 7,167/x
  3. Step 3: Cross multiply
    3,984x = 7,167 × 7,167
  4. Step 4: Simplify right side
    3,984x = 51,365,889
  5. Step 5: Solve for x
    x = 51,365,889/3,984
  6. Step 6: Final answer
    x = 12,893.04

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Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.