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Finding the Fourth Proportional to 57,468.89, 86,189.67 and 18,020.88

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Solution

The fourth proportional to 57,468.89, 86,189.67 and 18,020.88 is: 27,027.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,468.89 : 86,189.67 = 18,020.88 : x
  2. Step 2: Convert to fraction form
    57,468.89/86,189.67 = 18,020.88/x
  3. Step 3: Cross multiply
    57,468.89x = 86,189.67 × 18,020.88
  4. Step 4: Simplify right side
    57,468.89x = 1,553,213,700.31
  5. Step 5: Solve for x
    x = 1,553,213,700.31/57,468.89
  6. Step 6: Final answer
    x = 27,027.03

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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.