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Finding the Fourth Proportional to 396,486.90, 597,701.43 and 370,091.43

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Solution

The fourth proportional to 396,486.90, 597,701.43 and 370,091.43 is: 557,910.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,486.90 : 597,701.43 = 370,091.43 : x
  2. Step 2: Convert to fraction form
    396,486.90/597,701.43 = 370,091.43/x
  3. Step 3: Cross multiply
    396,486.90x = 597,701.43 × 370,091.43
  4. Step 4: Simplify right side
    396,486.90x = 221,204,176,941.75
  5. Step 5: Solve for x
    x = 221,204,176,941.75/396,486.90
  6. Step 6: Final answer
    x = 557,910.43

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.