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Finding the Fourth Proportional to 75,640.82, 104,383.46 and 41,648.61

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Solution

The fourth proportional to 75,640.82, 104,383.46 and 41,648.61 is: 57,474.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,640.82 : 104,383.46 = 41,648.61 : x
  2. Step 2: Convert to fraction form
    75,640.82/104,383.46 = 41,648.61/x
  3. Step 3: Cross multiply
    75,640.82x = 104,383.46 × 41,648.61
  4. Step 4: Simplify right side
    75,640.82x = 4,347,426,120.11
  5. Step 5: Solve for x
    x = 4,347,426,120.11/75,640.82
  6. Step 6: Final answer
    x = 57,474.60

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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.