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Finding the Fourth Proportional to 104,644.55, 156,963.31 and 45,480.21

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Solution

The fourth proportional to 104,644.55, 156,963.31 and 45,480.21 is: 68,218.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,644.55 : 156,963.31 = 45,480.21 : x
  2. Step 2: Convert to fraction form
    104,644.55/156,963.31 = 45,480.21/x
  3. Step 3: Cross multiply
    104,644.55x = 156,963.31 × 45,480.21
  4. Step 4: Simplify right side
    104,644.55x = 7,138,724,187.39
  5. Step 5: Solve for x
    x = 7,138,724,187.39/104,644.55
  6. Step 6: Final answer
    x = 68,218.79

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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.