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Finding the Third Proportional to 33,128 and 51,276

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Solution

The third proportional to 33,128 and 51,276 is: 79,365.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,128 : 51,276 = 51,276 : x
  2. Step 2: Convert to fraction form
    33,128/51,276 = 51,276/x
  3. Step 3: Cross multiply
    33,128x = 51,276 × 51,276
  4. Step 4: Simplify right side
    33,128x = 2,629,228,176
  5. Step 5: Solve for x
    x = 2,629,228,176/33,128
  6. Step 6: Final answer
    x = 79,365.74

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.