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Finding the Fourth Proportional to 110,940.40, 166,313.40 and 66,584.80

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Solution

The fourth proportional to 110,940.40, 166,313.40 and 66,584.80 is: 99,818.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,940.40 : 166,313.40 = 66,584.80 : x
  2. Step 2: Convert to fraction form
    110,940.40/166,313.40 = 66,584.80/x
  3. Step 3: Cross multiply
    110,940.40x = 166,313.40 × 66,584.80
  4. Step 4: Simplify right side
    110,940.40x = 11,073,944,476.32
  5. Step 5: Solve for x
    x = 11,073,944,476.32/110,940.40
  6. Step 6: Final answer
    x = 99,818.86

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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.