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Finding the Third Proportional to 911.50 and 2,206

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Solution

The third proportional to 911.50 and 2,206 is: 5,338.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    911.50 : 2,206 = 2,206 : x
  2. Step 2: Convert to fraction form
    911.50/2,206 = 2,206/x
  3. Step 3: Cross multiply
    911.50x = 2,206 × 2,206
  4. Step 4: Simplify right side
    911.50x = 4,866,436
  5. Step 5: Solve for x
    x = 4,866,436/911.50
  6. Step 6: Final answer
    x = 5,338.93

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.