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Finding the Fourth Proportional to 319,791.39, 441,333.41 and 212,176.41

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Solution

The fourth proportional to 319,791.39, 441,333.41 and 212,176.41 is: 292,817.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,791.39 : 441,333.41 = 212,176.41 : x
  2. Step 2: Convert to fraction form
    319,791.39/441,333.41 = 212,176.41/x
  3. Step 3: Cross multiply
    319,791.39x = 441,333.41 × 212,176.41
  4. Step 4: Simplify right side
    319,791.39x = 93,640,537,485.98
  5. Step 5: Solve for x
    x = 93,640,537,485.98/319,791.39
  6. Step 6: Final answer
    x = 292,817.57

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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.