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Finding the Fourth Proportional to 318,613.86, 477,920.19 and 94,131.98

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Solution

The fourth proportional to 318,613.86, 477,920.19 and 94,131.98 is: 141,197.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,613.86 : 477,920.19 = 94,131.98 : x
  2. Step 2: Convert to fraction form
    318,613.86/477,920.19 = 94,131.98/x
  3. Step 3: Cross multiply
    318,613.86x = 477,920.19 × 94,131.98
  4. Step 4: Simplify right side
    318,613.86x = 44,987,573,766.68
  5. Step 5: Solve for x
    x = 44,987,573,766.68/318,613.86
  6. Step 6: Final answer
    x = 141,197.79

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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.