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Finding the Fourth Proportional to 7,940.66, 11,909.97 and 2,674.85

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Solution

The fourth proportional to 7,940.66, 11,909.97 and 2,674.85 is: 4,011.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.66 : 11,909.97 = 2,674.85 : x
  2. Step 2: Convert to fraction form
    7,940.66/11,909.97 = 2,674.85/x
  3. Step 3: Cross multiply
    7,940.66x = 11,909.97 × 2,674.85
  4. Step 4: Simplify right side
    7,940.66x = 31,857,323.70
  5. Step 5: Solve for x
    x = 31,857,323.70/7,940.66
  6. Step 6: Final answer
    x = 4,011.93

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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.