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Finding the Third Proportional to 863 and 2,146

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Solution

The third proportional to 863 and 2,146 is: 5,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    863 : 2,146 = 2,146 : x
  2. Step 2: Convert to fraction form
    863/2,146 = 2,146/x
  3. Step 3: Cross multiply
    863x = 2,146 × 2,146
  4. Step 4: Simplify right side
    863x = 4,605,316
  5. Step 5: Solve for x
    x = 4,605,316/863
  6. Step 6: Final answer
    x = 5,336.40

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Why These Related Problems?

These problems maintain the same ratio (2.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.