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Finding the Fourth Proportional to 396,376.85, 546,771.30 and 252,975.26

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Solution

The fourth proportional to 396,376.85, 546,771.30 and 252,975.26 is: 348,959.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,376.85 : 546,771.30 = 252,975.26 : x
  2. Step 2: Convert to fraction form
    396,376.85/546,771.30 = 252,975.26/x
  3. Step 3: Cross multiply
    396,376.85x = 546,771.30 × 252,975.26
  4. Step 4: Simplify right side
    396,376.85x = 138,319,612,196.31
  5. Step 5: Solve for x
    x = 138,319,612,196.31/396,376.85
  6. Step 6: Final answer
    x = 348,959.86

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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.