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Finding the Third Proportional to 2,163 and 2,355

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Solution

The third proportional to 2,163 and 2,355 is: 2,564.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163 : 2,355 = 2,355 : x
  2. Step 2: Convert to fraction form
    2,163/2,355 = 2,355/x
  3. Step 3: Cross multiply
    2,163x = 2,355 × 2,355
  4. Step 4: Simplify right side
    2,163x = 5,546,025
  5. Step 5: Solve for x
    x = 5,546,025/2,163
  6. Step 6: Final answer
    x = 2,564.04

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.