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Finding the Fourth Proportional to 3,841.11, 5,763.11 and 1,991.07

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Solution

The fourth proportional to 3,841.11, 5,763.11 and 1,991.07 is: 2,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,841.11 : 5,763.11 = 1,991.07 : x
  2. Step 2: Convert to fraction form
    3,841.11/5,763.11 = 1,991.07/x
  3. Step 3: Cross multiply
    3,841.11x = 5,763.11 × 1,991.07
  4. Step 4: Simplify right side
    3,841.11x = 11,474,745.47
  5. Step 5: Solve for x
    x = 11,474,745.47/3,841.11
  6. Step 6: Final answer
    x = 2,987.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.