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Finding the Fourth Proportional to 443,610.20, 665,285.70 and 159,267.80

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Solution

The fourth proportional to 443,610.20, 665,285.70 and 159,267.80 is: 238,855.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,610.20 : 665,285.70 = 159,267.80 : x
  2. Step 2: Convert to fraction form
    443,610.20/665,285.70 = 159,267.80/x
  3. Step 3: Cross multiply
    443,610.20x = 665,285.70 × 159,267.80
  4. Step 4: Simplify right side
    443,610.20x = 105,958,589,810.46
  5. Step 5: Solve for x
    x = 105,958,589,810.46/443,610.20
  6. Step 6: Final answer
    x = 238,855.17

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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.