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Finding the Third Proportional to 3,922 and 7,484

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Solution

The third proportional to 3,922 and 7,484 is: 14,281.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922 : 7,484 = 7,484 : x
  2. Step 2: Convert to fraction form
    3,922/7,484 = 7,484/x
  3. Step 3: Cross multiply
    3,922x = 7,484 × 7,484
  4. Step 4: Simplify right side
    3,922x = 56,010,256
  5. Step 5: Solve for x
    x = 56,010,256/3,922
  6. Step 6: Final answer
    x = 14,281.04

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.