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Finding the Fourth Proportional to 74,149.70, 111,201.48 and 26,758.64

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Solution

The fourth proportional to 74,149.70, 111,201.48 and 26,758.64 is: 40,129.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,149.70 : 111,201.48 = 26,758.64 : x
  2. Step 2: Convert to fraction form
    74,149.70/111,201.48 = 26,758.64/x
  3. Step 3: Cross multiply
    74,149.70x = 111,201.48 × 26,758.64
  4. Step 4: Simplify right side
    74,149.70x = 2,975,599,814.78
  5. Step 5: Solve for x
    x = 2,975,599,814.78/74,149.70
  6. Step 6: Final answer
    x = 40,129.63

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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.