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Finding the Third Proportional to 4,322 and 6,619

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Solution

The third proportional to 4,322 and 6,619 is: 10,136.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,322 : 6,619 = 6,619 : x
  2. Step 2: Convert to fraction form
    4,322/6,619 = 6,619/x
  3. Step 3: Cross multiply
    4,322x = 6,619 × 6,619
  4. Step 4: Simplify right side
    4,322x = 43,811,161
  5. Step 5: Solve for x
    x = 43,811,161/4,322
  6. Step 6: Final answer
    x = 10,136.78

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.