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Finding the Fourth Proportional to 118,163.76, 163,099.72 and 67,203.96

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Solution

The fourth proportional to 118,163.76, 163,099.72 and 67,203.96 is: 92,760.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,163.76 : 163,099.72 = 67,203.96 : x
  2. Step 2: Convert to fraction form
    118,163.76/163,099.72 = 67,203.96/x
  3. Step 3: Cross multiply
    118,163.76x = 163,099.72 × 67,203.96
  4. Step 4: Simplify right side
    118,163.76x = 10,960,947,058.89
  5. Step 5: Solve for x
    x = 10,960,947,058.89/118,163.76
  6. Step 6: Final answer
    x = 92,760.65

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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.