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Finding the Fourth Proportional to 543,608.40, 815,542.20 and 262,894.80

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Solution

The fourth proportional to 543,608.40, 815,542.20 and 262,894.80 is: 394,404.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,608.40 : 815,542.20 = 262,894.80 : x
  2. Step 2: Convert to fraction form
    543,608.40/815,542.20 = 262,894.80/x
  3. Step 3: Cross multiply
    543,608.40x = 815,542.20 × 262,894.80
  4. Step 4: Simplify right side
    543,608.40x = 214,401,803,560.56
  5. Step 5: Solve for x
    x = 214,401,803,560.56/543,608.40
  6. Step 6: Final answer
    x = 394,404.88

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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.