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Finding the Fourth Proportional to 104,672.97, 156,997.89 and 28,777.44

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Solution

The fourth proportional to 104,672.97, 156,997.89 and 28,777.44 is: 43,162.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,672.97 : 156,997.89 = 28,777.44 : x
  2. Step 2: Convert to fraction form
    104,672.97/156,997.89 = 28,777.44/x
  3. Step 3: Cross multiply
    104,672.97x = 156,997.89 × 28,777.44
  4. Step 4: Simplify right side
    104,672.97x = 4,517,997,359.60
  5. Step 5: Solve for x
    x = 4,517,997,359.60/104,672.97
  6. Step 6: Final answer
    x = 43,162.98

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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.