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Finding the Third Proportional to 32,644 and 67,220

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Solution

The third proportional to 32,644 and 67,220 is: 138,418.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,644 : 67,220 = 67,220 : x
  2. Step 2: Convert to fraction form
    32,644/67,220 = 67,220/x
  3. Step 3: Cross multiply
    32,644x = 67,220 × 67,220
  4. Step 4: Simplify right side
    32,644x = 4,518,528,400
  5. Step 5: Solve for x
    x = 4,518,528,400/32,644
  6. Step 6: Final answer
    x = 138,418.34

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.