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Finding the Fourth Proportional to 18,550.42, 27,817.16 and 8,015.48

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Solution

The fourth proportional to 18,550.42, 27,817.16 and 8,015.48 is: 12,019.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,550.42 : 27,817.16 = 8,015.48 : x
  2. Step 2: Convert to fraction form
    18,550.42/27,817.16 = 8,015.48/x
  3. Step 3: Cross multiply
    18,550.42x = 27,817.16 × 8,015.48
  4. Step 4: Simplify right side
    18,550.42x = 222,967,889.64
  5. Step 5: Solve for x
    x = 222,967,889.64/18,550.42
  6. Step 6: Final answer
    x = 12,019.56

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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.