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Finding the Third Proportional to 28,212 and 61,984

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Solution

The third proportional to 28,212 and 61,984 is: 136,183.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212 : 61,984 = 61,984 : x
  2. Step 2: Convert to fraction form
    28,212/61,984 = 61,984/x
  3. Step 3: Cross multiply
    28,212x = 61,984 × 61,984
  4. Step 4: Simplify right side
    28,212x = 3,842,016,256
  5. Step 5: Solve for x
    x = 3,842,016,256/28,212
  6. Step 6: Final answer
    x = 136,183.76

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.