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Finding the Fourth Proportional to 108,793.78, 162,997.26 and 45,474.46

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Solution

The fourth proportional to 108,793.78, 162,997.26 and 45,474.46 is: 68,130.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,793.78 : 162,997.26 = 45,474.46 : x
  2. Step 2: Convert to fraction form
    108,793.78/162,997.26 = 45,474.46/x
  3. Step 3: Cross multiply
    108,793.78x = 162,997.26 × 45,474.46
  4. Step 4: Simplify right side
    108,793.78x = 7,412,212,379.98
  5. Step 5: Solve for x
    x = 7,412,212,379.98/108,793.78
  6. Step 6: Final answer
    x = 68,130.85

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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.