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Finding the Third Proportional to 6,128 and 8,274

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Solution

The third proportional to 6,128 and 8,274 is: 11,171.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128 : 8,274 = 8,274 : x
  2. Step 2: Convert to fraction form
    6,128/8,274 = 8,274/x
  3. Step 3: Cross multiply
    6,128x = 8,274 × 8,274
  4. Step 4: Simplify right side
    6,128x = 68,459,076
  5. Step 5: Solve for x
    x = 68,459,076/6,128
  6. Step 6: Final answer
    x = 11,171.52

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.