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Finding the Third Proportional to 3,993.75 and 4,842

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Solution

The third proportional to 3,993.75 and 4,842 is: 5,870.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.75 : 4,842 = 4,842 : x
  2. Step 2: Convert to fraction form
    3,993.75/4,842 = 4,842/x
  3. Step 3: Cross multiply
    3,993.75x = 4,842 × 4,842
  4. Step 4: Simplify right side
    3,993.75x = 23,444,964
  5. Step 5: Solve for x
    x = 23,444,964/3,993.75
  6. Step 6: Final answer
    x = 5,870.41

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.