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Finding the Fourth Proportional to 221,553.70, 331,893.15 and 132,542.80

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Solution

The fourth proportional to 221,553.70, 331,893.15 and 132,542.80 is: 198,552.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,553.70 : 331,893.15 = 132,542.80 : x
  2. Step 2: Convert to fraction form
    221,553.70/331,893.15 = 132,542.80/x
  3. Step 3: Cross multiply
    221,553.70x = 331,893.15 × 132,542.80
  4. Step 4: Simplify right side
    221,553.70x = 43,990,047,401.82
  5. Step 5: Solve for x
    x = 43,990,047,401.82/221,553.70
  6. Step 6: Final answer
    x = 198,552.53

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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.