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Finding the Fourth Proportional to 395,598.62, 593,414.28 and 115,115.87

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Solution

The fourth proportional to 395,598.62, 593,414.28 and 115,115.87 is: 172,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,598.62 : 593,414.28 = 115,115.87 : x
  2. Step 2: Convert to fraction form
    395,598.62/593,414.28 = 115,115.87/x
  3. Step 3: Cross multiply
    395,598.62x = 593,414.28 × 115,115.87
  4. Step 4: Simplify right side
    395,598.62x = 68,311,398,145.55
  5. Step 5: Solve for x
    x = 68,311,398,145.55/395,598.62
  6. Step 6: Final answer
    x = 172,678.56

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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.