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Finding the Third Proportional to 2,436 and 5,220

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Solution

The third proportional to 2,436 and 5,220 is: 11,185.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,436 : 5,220 = 5,220 : x
  2. Step 2: Convert to fraction form
    2,436/5,220 = 5,220/x
  3. Step 3: Cross multiply
    2,436x = 5,220 × 5,220
  4. Step 4: Simplify right side
    2,436x = 27,248,400
  5. Step 5: Solve for x
    x = 27,248,400/2,436
  6. Step 6: Final answer
    x = 11,185.71

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.