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Finding the Fourth Proportional to 7,940.73, 11,909.07 and 2,674.92

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Solution

The fourth proportional to 7,940.73, 11,909.07 and 2,674.92 is: 4,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.73 : 11,909.07 = 2,674.92 : x
  2. Step 2: Convert to fraction form
    7,940.73/11,909.07 = 2,674.92/x
  3. Step 3: Cross multiply
    7,940.73x = 11,909.07 × 2,674.92
  4. Step 4: Simplify right side
    7,940.73x = 31,855,809.52
  5. Step 5: Solve for x
    x = 31,855,809.52/7,940.73
  6. Step 6: Final answer
    x = 4,011.70

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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.