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Finding the Fourth Proportional to 110,939.98, 166,451.89 and 66,597.64

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Solution

The fourth proportional to 110,939.98, 166,451.89 and 66,597.64 is: 99,921.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,939.98 : 166,451.89 = 66,597.64 : x
  2. Step 2: Convert to fraction form
    110,939.98/166,451.89 = 66,597.64/x
  3. Step 3: Cross multiply
    110,939.98x = 166,451.89 × 66,597.64
  4. Step 4: Simplify right side
    110,939.98x = 11,085,303,338.77
  5. Step 5: Solve for x
    x = 11,085,303,338.77/110,939.98
  6. Step 6: Final answer
    x = 99,921.63

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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.