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Finding the Fourth Proportional to 395,630.26, 593,518.29 and 129,404.94

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Solution

The fourth proportional to 395,630.26, 593,518.29 and 129,404.94 is: 194,131.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,630.26 : 593,518.29 = 129,404.94 : x
  2. Step 2: Convert to fraction form
    395,630.26/593,518.29 = 129,404.94/x
  3. Step 3: Cross multiply
    395,630.26x = 593,518.29 × 129,404.94
  4. Step 4: Simplify right side
    395,630.26x = 76,804,198,706.35
  5. Step 5: Solve for x
    x = 76,804,198,706.35/395,630.26
  6. Step 6: Final answer
    x = 194,131.25

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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.