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Finding the Third Proportional to 4,991 and 7,477

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Solution

The third proportional to 4,991 and 7,477 is: 11,201.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991 : 7,477 = 7,477 : x
  2. Step 2: Convert to fraction form
    4,991/7,477 = 7,477/x
  3. Step 3: Cross multiply
    4,991x = 7,477 × 7,477
  4. Step 4: Simplify right side
    4,991x = 55,905,529
  5. Step 5: Solve for x
    x = 55,905,529/4,991
  6. Step 6: Final answer
    x = 11,201.27

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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.