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Finding the Fourth Proportional to 38,568, 57,843.36 and 18,837.12

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Solution

The fourth proportional to 38,568, 57,843.36 and 18,837.12 is: 28,251.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,568 : 57,843.36 = 18,837.12 : x
  2. Step 2: Convert to fraction form
    38,568/57,843.36 = 18,837.12/x
  3. Step 3: Cross multiply
    38,568x = 57,843.36 × 18,837.12
  4. Step 4: Simplify right side
    38,568x = 1,089,602,313.52
  5. Step 5: Solve for x
    x = 1,089,602,313.52/38,568
  6. Step 6: Final answer
    x = 28,251.46

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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.