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Finding the Fourth Proportional to 396,479.88, 546,986.52 and 226,622.88

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Solution

The fourth proportional to 396,479.88, 546,986.52 and 226,622.88 is: 312,650.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,479.88 : 546,986.52 = 226,622.88 : x
  2. Step 2: Convert to fraction form
    396,479.88/546,986.52 = 226,622.88/x
  3. Step 3: Cross multiply
    396,479.88x = 546,986.52 × 226,622.88
  4. Step 4: Simplify right side
    396,479.88x = 123,959,660,483.58
  5. Step 5: Solve for x
    x = 123,959,660,483.58/396,479.88
  6. Step 6: Final answer
    x = 312,650.57

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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.