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Finding the Third Proportional to 2,556 and 5,271.75

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Solution

The third proportional to 2,556 and 5,271.75 is: 10,872.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,556 : 5,271.75 = 5,271.75 : x
  2. Step 2: Convert to fraction form
    2,556/5,271.75 = 5,271.75/x
  3. Step 3: Cross multiply
    2,556x = 5,271.75 × 5,271.75
  4. Step 4: Simplify right side
    2,556x = 27,791,348.06
  5. Step 5: Solve for x
    x = 27,791,348.06/2,556
  6. Step 6: Final answer
    x = 10,872.98

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.