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Finding the Fourth Proportional to 103,091.81, 154,375.20 and 67,924.85

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Solution

The fourth proportional to 103,091.81, 154,375.20 and 67,924.85 is: 101,714.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,091.81 : 154,375.20 = 67,924.85 : x
  2. Step 2: Convert to fraction form
    103,091.81/154,375.20 = 67,924.85/x
  3. Step 3: Cross multiply
    103,091.81x = 154,375.20 × 67,924.85
  4. Step 4: Simplify right side
    103,091.81x = 10,485,911,531.84
  5. Step 5: Solve for x
    x = 10,485,911,531.84/103,091.81
  6. Step 6: Final answer
    x = 101,714.31

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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.