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Finding the Third Proportional to 4,451 and 7,942

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Solution

The third proportional to 4,451 and 7,942 is: 14,171.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,451 : 7,942 = 7,942 : x
  2. Step 2: Convert to fraction form
    4,451/7,942 = 7,942/x
  3. Step 3: Cross multiply
    4,451x = 7,942 × 7,942
  4. Step 4: Simplify right side
    4,451x = 63,075,364
  5. Step 5: Solve for x
    x = 63,075,364/4,451
  6. Step 6: Final answer
    x = 14,171.05

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.