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Finding the Third Proportional to 12,787.88 and 27,216

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Solution

The third proportional to 12,787.88 and 27,216 is: 57,922.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.88 : 27,216 = 27,216 : x
  2. Step 2: Convert to fraction form
    12,787.88/27,216 = 27,216/x
  3. Step 3: Cross multiply
    12,787.88x = 27,216 × 27,216
  4. Step 4: Simplify right side
    12,787.88x = 740,710,656
  5. Step 5: Solve for x
    x = 740,710,656/12,787.88
  6. Step 6: Final answer
    x = 57,922.89

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.