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Finding the Fourth Proportional to 18,471.44, 27,707.72 and 7,226.32

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Solution

The fourth proportional to 18,471.44, 27,707.72 and 7,226.32 is: 10,839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.44 : 27,707.72 = 7,226.32 : x
  2. Step 2: Convert to fraction form
    18,471.44/27,707.72 = 7,226.32/x
  3. Step 3: Cross multiply
    18,471.44x = 27,707.72 × 7,226.32
  4. Step 4: Simplify right side
    18,471.44x = 200,224,851.19
  5. Step 5: Solve for x
    x = 200,224,851.19/18,471.44
  6. Step 6: Final answer
    x = 10,839.70

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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.