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Finding the Fourth Proportional to 57,751.26, 86,630.00 and 18,311.46

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Solution

The fourth proportional to 57,751.26, 86,630.00 and 18,311.46 is: 27,468.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,751.26 : 86,630.00 = 18,311.46 : x
  2. Step 2: Convert to fraction form
    57,751.26/86,630.00 = 18,311.46/x
  3. Step 3: Cross multiply
    57,751.26x = 86,630.00 × 18,311.46
  4. Step 4: Simplify right side
    57,751.26x = 1,586,321,688.24
  5. Step 5: Solve for x
    x = 1,586,321,688.24/57,751.26
  6. Step 6: Final answer
    x = 27,468.17

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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.