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Finding the Fourth Proportional to 74,375.58, 111,532.77 and 36,921.90

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Solution

The fourth proportional to 74,375.58, 111,532.77 and 36,921.90 is: 55,367.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,375.58 : 111,532.77 = 36,921.90 : x
  2. Step 2: Convert to fraction form
    74,375.58/111,532.77 = 36,921.90/x
  3. Step 3: Cross multiply
    74,375.58x = 111,532.77 × 36,921.90
  4. Step 4: Simplify right side
    74,375.58x = 4,118,001,780.66
  5. Step 5: Solve for x
    x = 4,118,001,780.66/74,375.58
  6. Step 6: Final answer
    x = 55,367.66

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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.