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Finding the Fourth Proportional to 192,031.20, 288,046.80 and 174,520.80

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Solution

The fourth proportional to 192,031.20, 288,046.80 and 174,520.80 is: 261,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,031.20 : 288,046.80 = 174,520.80 : x
  2. Step 2: Convert to fraction form
    192,031.20/288,046.80 = 174,520.80/x
  3. Step 3: Cross multiply
    192,031.20x = 288,046.80 × 174,520.80
  4. Step 4: Simplify right side
    192,031.20x = 50,270,157,973.44
  5. Step 5: Solve for x
    x = 50,270,157,973.44/192,031.20
  6. Step 6: Final answer
    x = 261,781.20

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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.