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Finding the Fourth Proportional to 68,912.37, 95,134.50 and 58,947.85

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Solution

The fourth proportional to 68,912.37, 95,134.50 and 58,947.85 is: 81,378.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,912.37 : 95,134.50 = 58,947.85 : x
  2. Step 2: Convert to fraction form
    68,912.37/95,134.50 = 58,947.85/x
  3. Step 3: Cross multiply
    68,912.37x = 95,134.50 × 58,947.85
  4. Step 4: Simplify right side
    68,912.37x = 5,607,974,354.74
  5. Step 5: Solve for x
    x = 5,607,974,354.74/68,912.37
  6. Step 6: Final answer
    x = 81,378.34

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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.