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Finding the Third Proportional to 61,460 and 83,415

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Solution

The third proportional to 61,460 and 83,415 is: 113,212.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,460 : 83,415 = 83,415 : x
  2. Step 2: Convert to fraction form
    61,460/83,415 = 83,415/x
  3. Step 3: Cross multiply
    61,460x = 83,415 × 83,415
  4. Step 4: Simplify right side
    61,460x = 6,958,062,225
  5. Step 5: Solve for x
    x = 6,958,062,225/61,460
  6. Step 6: Final answer
    x = 113,212.86

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.