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Finding the Fourth Proportional to 226,312.11, 339,531.71 and 66,391.82

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Solution

The fourth proportional to 226,312.11, 339,531.71 and 66,391.82 is: 99,606.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,312.11 : 339,531.71 = 66,391.82 : x
  2. Step 2: Convert to fraction form
    226,312.11/339,531.71 = 66,391.82/x
  3. Step 3: Cross multiply
    226,312.11x = 339,531.71 × 66,391.82
  4. Step 4: Simplify right side
    226,312.11x = 22,542,126,476.95
  5. Step 5: Solve for x
    x = 22,542,126,476.95/226,312.11
  6. Step 6: Final answer
    x = 99,606.37

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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.