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Finding the Fourth Proportional to 111,519.91, 154,025.21 and 73,449.61

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Solution

The fourth proportional to 111,519.91, 154,025.21 and 73,449.61 is: 101,444.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,519.91 : 154,025.21 = 73,449.61 : x
  2. Step 2: Convert to fraction form
    111,519.91/154,025.21 = 73,449.61/x
  3. Step 3: Cross multiply
    111,519.91x = 154,025.21 × 73,449.61
  4. Step 4: Simplify right side
    111,519.91x = 11,313,091,604.67
  5. Step 5: Solve for x
    x = 11,313,091,604.67/111,519.91
  6. Step 6: Final answer
    x = 101,444.59

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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.