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Finding the Fourth Proportional to 443,224.80, 664,472.70 and 190,699.20

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Solution

The fourth proportional to 443,224.80, 664,472.70 and 190,699.20 is: 285,891.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,224.80 : 664,472.70 = 190,699.20 : x
  2. Step 2: Convert to fraction form
    443,224.80/664,472.70 = 190,699.20/x
  3. Step 3: Cross multiply
    443,224.80x = 664,472.70 × 190,699.20
  4. Step 4: Simplify right side
    443,224.80x = 126,714,412,311.84
  5. Step 5: Solve for x
    x = 126,714,412,311.84/443,224.80
  6. Step 6: Final answer
    x = 285,891.97

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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.