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Finding the Third Proportional to 12,226.50 and 13,320

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Solution

The third proportional to 12,226.50 and 13,320 is: 14,511.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226.50 : 13,320 = 13,320 : x
  2. Step 2: Convert to fraction form
    12,226.50/13,320 = 13,320/x
  3. Step 3: Cross multiply
    12,226.50x = 13,320 × 13,320
  4. Step 4: Simplify right side
    12,226.50x = 177,422,400
  5. Step 5: Solve for x
    x = 177,422,400/12,226.50
  6. Step 6: Final answer
    x = 14,511.30

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.