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Finding the Third Proportional to 4,239 and 4,551

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Solution

The third proportional to 4,239 and 4,551 is: 4,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,239 : 4,551 = 4,551 : x
  2. Step 2: Convert to fraction form
    4,239/4,551 = 4,551/x
  3. Step 3: Cross multiply
    4,239x = 4,551 × 4,551
  4. Step 4: Simplify right side
    4,239x = 20,711,601
  5. Step 5: Solve for x
    x = 20,711,601/4,239
  6. Step 6: Final answer
    x = 4,885.96

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.