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Finding the Fourth Proportional to 114,912.36, 158,578.02 and 64,611.72

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Solution

The fourth proportional to 114,912.36, 158,578.02 and 64,611.72 is: 89,163.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,912.36 : 158,578.02 = 64,611.72 : x
  2. Step 2: Convert to fraction form
    114,912.36/158,578.02 = 64,611.72/x
  3. Step 3: Cross multiply
    114,912.36x = 158,578.02 × 64,611.72
  4. Step 4: Simplify right side
    114,912.36x = 10,245,998,626.39
  5. Step 5: Solve for x
    x = 10,245,998,626.39/114,912.36
  6. Step 6: Final answer
    x = 89,163.59

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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.