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Finding the Fourth Proportional to 68,763.96, 103,129.44 and 50,261.94

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Solution

The fourth proportional to 68,763.96, 103,129.44 and 50,261.94 is: 75,380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,763.96 : 103,129.44 = 50,261.94 : x
  2. Step 2: Convert to fraction form
    68,763.96/103,129.44 = 50,261.94/x
  3. Step 3: Cross multiply
    68,763.96x = 103,129.44 × 50,261.94
  4. Step 4: Simplify right side
    68,763.96x = 5,183,485,725.51
  5. Step 5: Solve for x
    x = 5,183,485,725.51/68,763.96
  6. Step 6: Final answer
    x = 75,380.85

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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.