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Finding the Fourth Proportional to 111,797.67, 154,226.58 and 66,443.55

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Solution

The fourth proportional to 111,797.67, 154,226.58 and 66,443.55 is: 91,659.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,797.67 : 154,226.58 = 66,443.55 : x
  2. Step 2: Convert to fraction form
    111,797.67/154,226.58 = 66,443.55/x
  3. Step 3: Cross multiply
    111,797.67x = 154,226.58 × 66,443.55
  4. Step 4: Simplify right side
    111,797.67x = 10,247,361,479.56
  5. Step 5: Solve for x
    x = 10,247,361,479.56/111,797.67
  6. Step 6: Final answer
    x = 91,659.88

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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.