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Finding the Third Proportional to 4,934 and 7,877

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Solution

The third proportional to 4,934 and 7,877 is: 12,575.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,934 : 7,877 = 7,877 : x
  2. Step 2: Convert to fraction form
    4,934/7,877 = 7,877/x
  3. Step 3: Cross multiply
    4,934x = 7,877 × 7,877
  4. Step 4: Simplify right side
    4,934x = 62,047,129
  5. Step 5: Solve for x
    x = 62,047,129/4,934
  6. Step 6: Final answer
    x = 12,575.42

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.