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Finding the Fourth Proportional to 57,861.54, 86,806.08 and 18,418.59

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Solution

The fourth proportional to 57,861.54, 86,806.08 and 18,418.59 is: 27,632.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,861.54 : 86,806.08 = 18,418.59 : x
  2. Step 2: Convert to fraction form
    57,861.54/86,806.08 = 18,418.59/x
  3. Step 3: Cross multiply
    57,861.54x = 86,806.08 × 18,418.59
  4. Step 4: Simplify right side
    57,861.54x = 1,598,845,597.03
  5. Step 5: Solve for x
    x = 1,598,845,597.03/57,861.54
  6. Step 6: Final answer
    x = 27,632.27

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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.