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Finding the Third Proportional to 38,966 and 85,221

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Solution

The third proportional to 38,966 and 85,221 is: 186,383.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,966 : 85,221 = 85,221 : x
  2. Step 2: Convert to fraction form
    38,966/85,221 = 85,221/x
  3. Step 3: Cross multiply
    38,966x = 85,221 × 85,221
  4. Step 4: Simplify right side
    38,966x = 7,262,618,841
  5. Step 5: Solve for x
    x = 7,262,618,841/38,966
  6. Step 6: Final answer
    x = 186,383.48

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.