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Finding the Third Proportional to 5,242 and 7,846

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Solution

The third proportional to 5,242 and 7,846 is: 11,743.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,242 : 7,846 = 7,846 : x
  2. Step 2: Convert to fraction form
    5,242/7,846 = 7,846/x
  3. Step 3: Cross multiply
    5,242x = 7,846 × 7,846
  4. Step 4: Simplify right side
    5,242x = 61,559,716
  5. Step 5: Solve for x
    x = 61,559,716/5,242
  6. Step 6: Final answer
    x = 11,743.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.