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Finding the Fourth Proportional to 192,991.80, 289,314.90 and 126,463.80

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Solution

The fourth proportional to 192,991.80, 289,314.90 and 126,463.80 is: 189,582.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,991.80 : 289,314.90 = 126,463.80 : x
  2. Step 2: Convert to fraction form
    192,991.80/289,314.90 = 126,463.80/x
  3. Step 3: Cross multiply
    192,991.80x = 289,314.90 × 126,463.80
  4. Step 4: Simplify right side
    192,991.80x = 36,587,861,650.62
  5. Step 5: Solve for x
    x = 36,587,861,650.62/192,991.80
  6. Step 6: Final answer
    x = 189,582.47

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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.