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Finding the Fourth Proportional to 167,399.98, 230,976.03 and 99,439.87

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Solution

The fourth proportional to 167,399.98, 230,976.03 and 99,439.87 is: 137,205.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,399.98 : 230,976.03 = 99,439.87 : x
  2. Step 2: Convert to fraction form
    167,399.98/230,976.03 = 99,439.87/x
  3. Step 3: Cross multiply
    167,399.98x = 230,976.03 × 99,439.87
  4. Step 4: Simplify right side
    167,399.98x = 22,968,226,396.32
  5. Step 5: Solve for x
    x = 22,968,226,396.32/167,399.98
  6. Step 6: Final answer
    x = 137,205.67

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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.