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Finding the Fourth Proportional to 196,612.80, 294,919.20 and 84,273.90

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Solution

The fourth proportional to 196,612.80, 294,919.20 and 84,273.90 is: 126,410.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,612.80 : 294,919.20 = 84,273.90 : x
  2. Step 2: Convert to fraction form
    196,612.80/294,919.20 = 84,273.90/x
  3. Step 3: Cross multiply
    196,612.80x = 294,919.20 × 84,273.90
  4. Step 4: Simplify right side
    196,612.80x = 24,853,991,168.88
  5. Step 5: Solve for x
    x = 24,853,991,168.88/196,612.80
  6. Step 6: Final answer
    x = 126,410.85

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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.