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Finding the Fourth Proportional to 568,438.70, 851,917.64 and 231,085.31

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Solution

The fourth proportional to 568,438.70, 851,917.64 and 231,085.31 is: 346,326.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,438.70 : 851,917.64 = 231,085.31 : x
  2. Step 2: Convert to fraction form
    568,438.70/851,917.64 = 231,085.31/x
  3. Step 3: Cross multiply
    568,438.70x = 851,917.64 × 231,085.31
  4. Step 4: Simplify right side
    568,438.70x = 196,865,646,518.85
  5. Step 5: Solve for x
    x = 196,865,646,518.85/568,438.70
  6. Step 6: Final answer
    x = 346,326.96

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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.