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Finding the Fourth Proportional to 57,020.88, 85,531.36 and 15,467.88

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Solution

The fourth proportional to 57,020.88, 85,531.36 and 15,467.88 is: 23,201.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,020.88 : 85,531.36 = 15,467.88 : x
  2. Step 2: Convert to fraction form
    57,020.88/85,531.36 = 15,467.88/x
  3. Step 3: Cross multiply
    57,020.88x = 85,531.36 × 15,467.88
  4. Step 4: Simplify right side
    57,020.88x = 1,322,988,812.72
  5. Step 5: Solve for x
    x = 1,322,988,812.72/57,020.88
  6. Step 6: Final answer
    x = 23,201.83

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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.