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Finding the Fourth Proportional to 118,912.75, 164,099.60 and 68,611.75

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Solution

The fourth proportional to 118,912.75, 164,099.60 and 68,611.75 is: 94,684.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,912.75 : 164,099.60 = 68,611.75 : x
  2. Step 2: Convert to fraction form
    118,912.75/164,099.60 = 68,611.75/x
  3. Step 3: Cross multiply
    118,912.75x = 164,099.60 × 68,611.75
  4. Step 4: Simplify right side
    118,912.75x = 11,259,160,730.30
  5. Step 5: Solve for x
    x = 11,259,160,730.30/118,912.75
  6. Step 6: Final answer
    x = 94,684.22

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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.