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Finding the Third Proportional to 2,994 and 6,421

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Solution

The third proportional to 2,994 and 6,421 is: 13,770.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,994 : 6,421 = 6,421 : x
  2. Step 2: Convert to fraction form
    2,994/6,421 = 6,421/x
  3. Step 3: Cross multiply
    2,994x = 6,421 × 6,421
  4. Step 4: Simplify right side
    2,994x = 41,229,241
  5. Step 5: Solve for x
    x = 41,229,241/2,994
  6. Step 6: Final answer
    x = 13,770.62

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.