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Finding the Fourth Proportional to 316,442.62, 436,691.82 and 173,211.94

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Solution

The fourth proportional to 316,442.62, 436,691.82 and 173,211.94 is: 239,033.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,442.62 : 436,691.82 = 173,211.94 : x
  2. Step 2: Convert to fraction form
    316,442.62/436,691.82 = 173,211.94/x
  3. Step 3: Cross multiply
    316,442.62x = 436,691.82 × 173,211.94
  4. Step 4: Simplify right side
    316,442.62x = 75,640,237,324.33
  5. Step 5: Solve for x
    x = 75,640,237,324.33/316,442.62
  6. Step 6: Final answer
    x = 239,033.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.