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Finding the Fourth Proportional to 100,665.01, 150,668.94 and 74,003.94

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Solution

The fourth proportional to 100,665.01, 150,668.94 and 74,003.94 is: 110,764.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,665.01 : 150,668.94 = 74,003.94 : x
  2. Step 2: Convert to fraction form
    100,665.01/150,668.94 = 74,003.94/x
  3. Step 3: Cross multiply
    100,665.01x = 150,668.94 × 74,003.94
  4. Step 4: Simplify right side
    100,665.01x = 11,150,095,195.62
  5. Step 5: Solve for x
    x = 11,150,095,195.62/100,665.01
  6. Step 6: Final answer
    x = 110,764.36

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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.