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Finding the Third Proportional to 61,164 and 132,120

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Solution

The third proportional to 61,164 and 132,120 is: 285,391.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,164 : 132,120 = 132,120 : x
  2. Step 2: Convert to fraction form
    61,164/132,120 = 132,120/x
  3. Step 3: Cross multiply
    61,164x = 132,120 × 132,120
  4. Step 4: Simplify right side
    61,164x = 17,455,694,400
  5. Step 5: Solve for x
    x = 17,455,694,400/61,164
  6. Step 6: Final answer
    x = 285,391.64

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.