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Finding the Fourth Proportional to 57,680.99, 86,520.95 and 18,238.11

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Solution

The fourth proportional to 57,680.99, 86,520.95 and 18,238.11 is: 27,357.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,680.99 : 86,520.95 = 18,238.11 : x
  2. Step 2: Convert to fraction form
    57,680.99/86,520.95 = 18,238.11/x
  3. Step 3: Cross multiply
    57,680.99x = 86,520.95 × 18,238.11
  4. Step 4: Simplify right side
    57,680.99x = 1,577,978,512.21
  5. Step 5: Solve for x
    x = 1,577,978,512.21/57,680.99
  6. Step 6: Final answer
    x = 27,357.00

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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.