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Finding the Fourth Proportional to 367,491.80, 551,237.70 and 320,835.80

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Solution

The fourth proportional to 367,491.80, 551,237.70 and 320,835.80 is: 481,253.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,491.80 : 551,237.70 = 320,835.80 : x
  2. Step 2: Convert to fraction form
    367,491.80/551,237.70 = 320,835.80/x
  3. Step 3: Cross multiply
    367,491.80x = 551,237.70 × 320,835.80
  4. Step 4: Simplify right side
    367,491.80x = 176,856,788,469.66
  5. Step 5: Solve for x
    x = 176,856,788,469.66/367,491.80
  6. Step 6: Final answer
    x = 481,253.70

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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.