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Finding the Fourth Proportional to 396,093.78, 594,130.77 and 115,613.46

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Solution

The fourth proportional to 396,093.78, 594,130.77 and 115,613.46 is: 173,417.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,093.78 : 594,130.77 = 115,613.46 : x
  2. Step 2: Convert to fraction form
    396,093.78/594,130.77 = 115,613.46/x
  3. Step 3: Cross multiply
    396,093.78x = 594,130.77 × 115,613.46
  4. Step 4: Simplify right side
    396,093.78x = 68,689,514,012.16
  5. Step 5: Solve for x
    x = 68,689,514,012.16/396,093.78
  6. Step 6: Final answer
    x = 173,417.30

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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.