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Finding the Third Proportional to 15,432 and 33,210

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Solution

The third proportional to 15,432 and 33,210 is: 71,468.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432 : 33,210 = 33,210 : x
  2. Step 2: Convert to fraction form
    15,432/33,210 = 33,210/x
  3. Step 3: Cross multiply
    15,432x = 33,210 × 33,210
  4. Step 4: Simplify right side
    15,432x = 1,102,904,100
  5. Step 5: Solve for x
    x = 1,102,904,100/15,432
  6. Step 6: Final answer
    x = 71,468.64

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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.