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Finding the Fourth Proportional to 367,491.38, 551,379.67 and 143,009.48

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Solution

The fourth proportional to 367,491.38, 551,379.67 and 143,009.48 is: 214,569.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,491.38 : 551,379.67 = 143,009.48 : x
  2. Step 2: Convert to fraction form
    367,491.38/551,379.67 = 143,009.48/x
  3. Step 3: Cross multiply
    367,491.38x = 551,379.67 × 143,009.48
  4. Step 4: Simplify right side
    367,491.38x = 78,852,520,910.20
  5. Step 5: Solve for x
    x = 78,852,520,910.20/367,491.38
  6. Step 6: Final answer
    x = 214,569.72

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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.