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Finding the Fourth Proportional to 568,791.18, 853,189.11 and 142,325.85

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Solution

The fourth proportional to 568,791.18, 853,189.11 and 142,325.85 is: 213,489.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,791.18 : 853,189.11 = 142,325.85 : x
  2. Step 2: Convert to fraction form
    568,791.18/853,189.11 = 142,325.85/x
  3. Step 3: Cross multiply
    568,791.18x = 853,189.11 × 142,325.85
  4. Step 4: Simplify right side
    568,791.18x = 121,430,860,313.92
  5. Step 5: Solve for x
    x = 121,430,860,313.92/568,791.18
  6. Step 6: Final answer
    x = 213,489.35

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Double scale
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Similar ratio
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1.5x scale

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.