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Finding the Fourth Proportional to 395,609.66, 593,507.84 and 129,369.14

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Solution

The fourth proportional to 395,609.66, 593,507.84 and 129,369.14 is: 194,084.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,609.66 : 593,507.84 = 129,369.14 : x
  2. Step 2: Convert to fraction form
    395,609.66/593,507.84 = 129,369.14/x
  3. Step 3: Cross multiply
    395,609.66x = 593,507.84 × 129,369.14
  4. Step 4: Simplify right side
    395,609.66x = 76,781,598,844.06
  5. Step 5: Solve for x
    x = 76,781,598,844.06/395,609.66
  6. Step 6: Final answer
    x = 194,084.24

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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.