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Finding the Fourth Proportional to 99,806.36, 149,787.74 and 69,624.27

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Solution

The fourth proportional to 99,806.36, 149,787.74 and 69,624.27 is: 104,490.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,806.36 : 149,787.74 = 69,624.27 : x
  2. Step 2: Convert to fraction form
    99,806.36/149,787.74 = 69,624.27/x
  3. Step 3: Cross multiply
    99,806.36x = 149,787.74 × 69,624.27
  4. Step 4: Simplify right side
    99,806.36x = 10,428,861,704.33
  5. Step 5: Solve for x
    x = 10,428,861,704.33/99,806.36
  6. Step 6: Final answer
    x = 104,490.96

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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.