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Finding the Fourth Proportional to 6,981.65, 9,634.51 and 3,794.86

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Solution

The fourth proportional to 6,981.65, 9,634.51 and 3,794.86 is: 5,236.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.65 : 9,634.51 = 3,794.86 : x
  2. Step 2: Convert to fraction form
    6,981.65/9,634.51 = 3,794.86/x
  3. Step 3: Cross multiply
    6,981.65x = 9,634.51 × 3,794.86
  4. Step 4: Simplify right side
    6,981.65x = 36,561,616.62
  5. Step 5: Solve for x
    x = 36,561,616.62/6,981.65
  6. Step 6: Final answer
    x = 5,236.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.