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Finding the Third Proportional to 1,718 and 3,820

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Solution

The third proportional to 1,718 and 3,820 is: 8,493.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718 : 3,820 = 3,820 : x
  2. Step 2: Convert to fraction form
    1,718/3,820 = 3,820/x
  3. Step 3: Cross multiply
    1,718x = 3,820 × 3,820
  4. Step 4: Simplify right side
    1,718x = 14,592,400
  5. Step 5: Solve for x
    x = 14,592,400/1,718
  6. Step 6: Final answer
    x = 8,493.83

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.