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Finding the Fourth Proportional to 192,906.74, 289,360.15 and 80,525.66

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Solution

The fourth proportional to 192,906.74, 289,360.15 and 80,525.66 is: 120,788.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,906.74 : 289,360.15 = 80,525.66 : x
  2. Step 2: Convert to fraction form
    192,906.74/289,360.15 = 80,525.66/x
  3. Step 3: Cross multiply
    192,906.74x = 289,360.15 × 80,525.66
  4. Step 4: Simplify right side
    192,906.74x = 23,300,915,408.33
  5. Step 5: Solve for x
    x = 23,300,915,408.33/192,906.74
  6. Step 6: Final answer
    x = 120,788.50

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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.