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Finding the Third Proportional to 28,216 and 61,992

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Solution

The third proportional to 28,216 and 61,992 is: 136,199.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216 : 61,992 = 61,992 : x
  2. Step 2: Convert to fraction form
    28,216/61,992 = 61,992/x
  3. Step 3: Cross multiply
    28,216x = 61,992 × 61,992
  4. Step 4: Simplify right side
    28,216x = 3,843,008,064
  5. Step 5: Solve for x
    x = 3,843,008,064/28,216
  6. Step 6: Final answer
    x = 136,199.61

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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.