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Finding the Third Proportional to 1,994 and 4,206

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Solution

The third proportional to 1,994 and 4,206 is: 8,871.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,994 : 4,206 = 4,206 : x
  2. Step 2: Convert to fraction form
    1,994/4,206 = 4,206/x
  3. Step 3: Cross multiply
    1,994x = 4,206 × 4,206
  4. Step 4: Simplify right side
    1,994x = 17,690,436
  5. Step 5: Solve for x
    x = 17,690,436/1,994
  6. Step 6: Final answer
    x = 8,871.83

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.