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Finding the Fourth Proportional to 79,328.50, 118,993.12 and 26,738.44

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Solution

The fourth proportional to 79,328.50, 118,993.12 and 26,738.44 is: 40,107.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,328.50 : 118,993.12 = 26,738.44 : x
  2. Step 2: Convert to fraction form
    79,328.50/118,993.12 = 26,738.44/x
  3. Step 3: Cross multiply
    79,328.50x = 118,993.12 × 26,738.44
  4. Step 4: Simplify right side
    79,328.50x = 3,181,690,035.20
  5. Step 5: Solve for x
    x = 3,181,690,035.20/79,328.50
  6. Step 6: Final answer
    x = 40,107.78

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1.5x scale

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.