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Finding the Third Proportional to 28,682 and 43,212

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Solution

The third proportional to 28,682 and 43,212 is: 65,102.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,682 : 43,212 = 43,212 : x
  2. Step 2: Convert to fraction form
    28,682/43,212 = 43,212/x
  3. Step 3: Cross multiply
    28,682x = 43,212 × 43,212
  4. Step 4: Simplify right side
    28,682x = 1,867,276,944
  5. Step 5: Solve for x
    x = 1,867,276,944/28,682
  6. Step 6: Final answer
    x = 65,102.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.