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Finding the Third Proportional to 4,921 and 7,494

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Solution

The third proportional to 4,921 and 7,494 is: 11,412.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921 : 7,494 = 7,494 : x
  2. Step 2: Convert to fraction form
    4,921/7,494 = 7,494/x
  3. Step 3: Cross multiply
    4,921x = 7,494 × 7,494
  4. Step 4: Simplify right side
    4,921x = 56,160,036
  5. Step 5: Solve for x
    x = 56,160,036/4,921
  6. Step 6: Final answer
    x = 11,412.32

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.