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Finding the Fourth Proportional to 551,138.80, 826,708.20 and 196,553.20

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Solution

The fourth proportional to 551,138.80, 826,708.20 and 196,553.20 is: 294,829.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,138.80 : 826,708.20 = 196,553.20 : x
  2. Step 2: Convert to fraction form
    551,138.80/826,708.20 = 196,553.20/x
  3. Step 3: Cross multiply
    551,138.80x = 826,708.20 × 196,553.20
  4. Step 4: Simplify right side
    551,138.80x = 162,492,142,176.24
  5. Step 5: Solve for x
    x = 162,492,142,176.24/551,138.80
  6. Step 6: Final answer
    x = 294,829.80

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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.