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Finding the Fourth Proportional to 118,104.44, 162,984.64 and 75,687.58

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Solution

The fourth proportional to 118,104.44, 162,984.64 and 75,687.58 is: 104,449.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,104.44 : 162,984.64 = 75,687.58 : x
  2. Step 2: Convert to fraction form
    118,104.44/162,984.64 = 75,687.58/x
  3. Step 3: Cross multiply
    118,104.44x = 162,984.64 × 75,687.58
  4. Step 4: Simplify right side
    118,104.44x = 12,335,912,163.85
  5. Step 5: Solve for x
    x = 12,335,912,163.85/118,104.44
  6. Step 6: Final answer
    x = 104,449.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.