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Finding the Third Proportional to 2,106 and 4,176

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Solution

The third proportional to 2,106 and 4,176 is: 8,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106 : 4,176 = 4,176 : x
  2. Step 2: Convert to fraction form
    2,106/4,176 = 4,176/x
  3. Step 3: Cross multiply
    2,106x = 4,176 × 4,176
  4. Step 4: Simplify right side
    2,106x = 17,438,976
  5. Step 5: Solve for x
    x = 17,438,976/2,106
  6. Step 6: Final answer
    x = 8,280.62

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.