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Finding the Fourth Proportional to 57,480.31, 86,224.11 and 18,038.98

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Solution

The fourth proportional to 57,480.31, 86,224.11 and 18,038.98 is: 27,059.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,480.31 : 86,224.11 = 18,038.98 : x
  2. Step 2: Convert to fraction form
    57,480.31/86,224.11 = 18,038.98/x
  3. Step 3: Cross multiply
    57,480.31x = 86,224.11 × 18,038.98
  4. Step 4: Simplify right side
    57,480.31x = 1,555,395,035.94
  5. Step 5: Solve for x
    x = 1,555,395,035.94/57,480.31
  6. Step 6: Final answer
    x = 27,059.61

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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.