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Finding the Fourth Proportional to 99,912.43, 149,925.30 and 36,724.33

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Solution

The fourth proportional to 99,912.43, 149,925.30 and 36,724.33 is: 55,107.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,912.43 : 149,925.30 = 36,724.33 : x
  2. Step 2: Convert to fraction form
    99,912.43/149,925.30 = 36,724.33/x
  3. Step 3: Cross multiply
    99,912.43x = 149,925.30 × 36,724.33
  4. Step 4: Simplify right side
    99,912.43x = 5,505,906,192.55
  5. Step 5: Solve for x
    x = 5,505,906,192.55/99,912.43
  6. Step 6: Final answer
    x = 55,107.32

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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.