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Finding the Fourth Proportional to 7,994.85, 11,988.63 and 3,836.82

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Solution

The fourth proportional to 7,994.85, 11,988.63 and 3,836.82 is: 5,753.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,994.85 : 11,988.63 = 3,836.82 : x
  2. Step 2: Convert to fraction form
    7,994.85/11,988.63 = 3,836.82/x
  3. Step 3: Cross multiply
    7,994.85x = 11,988.63 × 3,836.82
  4. Step 4: Simplify right side
    7,994.85x = 45,998,215.36
  5. Step 5: Solve for x
    x = 45,998,215.36/7,994.85
  6. Step 6: Final answer
    x = 5,753.48

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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.