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Finding the Third Proportional to 855.50 and 1,843

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Solution

The third proportional to 855.50 and 1,843 is: 3,970.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    855.50 : 1,843 = 1,843 : x
  2. Step 2: Convert to fraction form
    855.50/1,843 = 1,843/x
  3. Step 3: Cross multiply
    855.50x = 1,843 × 1,843
  4. Step 4: Simplify right side
    855.50x = 3,396,649
  5. Step 5: Solve for x
    x = 3,396,649/855.50
  6. Step 6: Final answer
    x = 3,970.37

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.