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Finding the Fourth Proportional to 111,891.99, 154,414.30 and 68,896.30

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Solution

The fourth proportional to 111,891.99, 154,414.30 and 68,896.30 is: 95,078.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,891.99 : 154,414.30 = 68,896.30 : x
  2. Step 2: Convert to fraction form
    111,891.99/154,414.30 = 68,896.30/x
  3. Step 3: Cross multiply
    111,891.99x = 154,414.30 × 68,896.30
  4. Step 4: Simplify right side
    111,891.99x = 10,638,573,937.09
  5. Step 5: Solve for x
    x = 10,638,573,937.09/111,891.99
  6. Step 6: Final answer
    x = 95,078.96

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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.