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Finding the Third Proportional to 15,421.25 and 33,136.75

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Solution

The third proportional to 15,421.25 and 33,136.75 is: 71,203.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,421.25 : 33,136.75 = 33,136.75 : x
  2. Step 2: Convert to fraction form
    15,421.25/33,136.75 = 33,136.75/x
  3. Step 3: Cross multiply
    15,421.25x = 33,136.75 × 33,136.75
  4. Step 4: Simplify right side
    15,421.25x = 1,098,044,200.56
  5. Step 5: Solve for x
    x = 1,098,044,200.56/15,421.25
  6. Step 6: Final answer
    x = 71,203.32

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.