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Finding the Third Proportional to 5,578.50 and 12,021

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Solution

The third proportional to 5,578.50 and 12,021 is: 25,903.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.50 : 12,021 = 12,021 : x
  2. Step 2: Convert to fraction form
    5,578.50/12,021 = 12,021/x
  3. Step 3: Cross multiply
    5,578.50x = 12,021 × 12,021
  4. Step 4: Simplify right side
    5,578.50x = 144,504,441
  5. Step 5: Solve for x
    x = 144,504,441/5,578.50
  6. Step 6: Final answer
    x = 25,903.82

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.