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Finding the Third Proportional to 4,021 and 5,274

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Solution

The third proportional to 4,021 and 5,274 is: 6,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,021 : 5,274 = 5,274 : x
  2. Step 2: Convert to fraction form
    4,021/5,274 = 5,274/x
  3. Step 3: Cross multiply
    4,021x = 5,274 × 5,274
  4. Step 4: Simplify right side
    4,021x = 27,815,076
  5. Step 5: Solve for x
    x = 27,815,076/4,021
  6. Step 6: Final answer
    x = 6,917.45

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.