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Finding the Fourth Proportional to 192,606.40, 288,909.60 and 129,620.80

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Solution

The fourth proportional to 192,606.40, 288,909.60 and 129,620.80 is: 194,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,606.40 : 288,909.60 = 129,620.80 : x
  2. Step 2: Convert to fraction form
    192,606.40/288,909.60 = 129,620.80/x
  3. Step 3: Cross multiply
    192,606.40x = 288,909.60 × 129,620.80
  4. Step 4: Simplify right side
    192,606.40x = 37,448,693,479.68
  5. Step 5: Solve for x
    x = 37,448,693,479.68/192,606.40
  6. Step 6: Final answer
    x = 194,431.20

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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.