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Finding the Fourth Proportional to 73,847.10, 110,770.65 and 68,889.90

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Solution

The fourth proportional to 73,847.10, 110,770.65 and 68,889.90 is: 103,334.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,847.10 : 110,770.65 = 68,889.90 : x
  2. Step 2: Convert to fraction form
    73,847.10/110,770.65 = 68,889.90/x
  3. Step 3: Cross multiply
    73,847.10x = 110,770.65 × 68,889.90
  4. Step 4: Simplify right side
    73,847.10x = 7,630,979,001.44
  5. Step 5: Solve for x
    x = 7,630,979,001.44/73,847.10
  6. Step 6: Final answer
    x = 103,334.85

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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.