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Finding the Fourth Proportional to 395,617.14, 593,499.68 and 129,392.12

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Solution

The fourth proportional to 395,617.14, 593,499.68 and 129,392.12 is: 194,112.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,617.14 : 593,499.68 = 129,392.12 : x
  2. Step 2: Convert to fraction form
    395,617.14/593,499.68 = 129,392.12/x
  3. Step 3: Cross multiply
    395,617.14x = 593,499.68 × 129,392.12
  4. Step 4: Simplify right side
    395,617.14x = 76,794,178,200.06
  5. Step 5: Solve for x
    x = 76,794,178,200.06/395,617.14
  6. Step 6: Final answer
    x = 194,112.36

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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.