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Finding the Fourth Proportional to 26,728.41, 40,105.98 and 11,947.94

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Solution

The fourth proportional to 26,728.41, 40,105.98 and 11,947.94 is: 17,927.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,728.41 : 40,105.98 = 11,947.94 : x
  2. Step 2: Convert to fraction form
    26,728.41/40,105.98 = 11,947.94/x
  3. Step 3: Cross multiply
    26,728.41x = 40,105.98 × 11,947.94
  4. Step 4: Simplify right side
    26,728.41x = 479,183,642.15
  5. Step 5: Solve for x
    x = 479,183,642.15/26,728.41
  6. Step 6: Final answer
    x = 17,927.88

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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.