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Finding the Fourth Proportional to 395,614.54, 593,003.44 and 129,303.55

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Solution

The fourth proportional to 395,614.54, 593,003.44 and 129,303.55 is: 193,818.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,614.54 : 593,003.44 = 129,303.55 : x
  2. Step 2: Convert to fraction form
    395,614.54/593,003.44 = 129,303.55/x
  3. Step 3: Cross multiply
    395,614.54x = 593,003.44 × 129,303.55
  4. Step 4: Simplify right side
    395,614.54x = 76,677,449,954.21
  5. Step 5: Solve for x
    x = 76,677,449,954.21/395,614.54
  6. Step 6: Final answer
    x = 193,818.58

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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.