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Finding the Fourth Proportional to 57,390.96, 86,091.39 and 15,837.96

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Solution

The fourth proportional to 57,390.96, 86,091.39 and 15,837.96 is: 23,758.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,390.96 : 86,091.39 = 15,837.96 : x
  2. Step 2: Convert to fraction form
    57,390.96/86,091.39 = 15,837.96/x
  3. Step 3: Cross multiply
    57,390.96x = 86,091.39 × 15,837.96
  4. Step 4: Simplify right side
    57,390.96x = 1,363,511,991.16
  5. Step 5: Solve for x
    x = 1,363,511,991.16/57,390.96
  6. Step 6: Final answer
    x = 23,758.31

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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.