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Finding the Third Proportional to 2,101.50 and 2,771

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Solution

The third proportional to 2,101.50 and 2,771 is: 3,653.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.50 : 2,771 = 2,771 : x
  2. Step 2: Convert to fraction form
    2,101.50/2,771 = 2,771/x
  3. Step 3: Cross multiply
    2,101.50x = 2,771 × 2,771
  4. Step 4: Simplify right side
    2,101.50x = 7,678,441
  5. Step 5: Solve for x
    x = 7,678,441/2,101.50
  6. Step 6: Final answer
    x = 3,653.79

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.