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Finding the Fourth Proportional to 395,346.32, 593,055.94 and 129,108.22

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Solution

The fourth proportional to 395,346.32, 593,055.94 and 129,108.22 is: 193,674.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,346.32 : 593,055.94 = 129,108.22 : x
  2. Step 2: Convert to fraction form
    395,346.32/593,055.94 = 129,108.22/x
  3. Step 3: Cross multiply
    395,346.32x = 593,055.94 × 129,108.22
  4. Step 4: Simplify right side
    395,346.32x = 76,568,396,773.83
  5. Step 5: Solve for x
    x = 76,568,396,773.83/395,346.32
  6. Step 6: Final answer
    x = 193,674.24

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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.