Home / 395,378.85-593,104.68-129,140.76

Finding the Fourth Proportional to 395,378.85, 593,104.68 and 129,140.76

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Solution

The fourth proportional to 395,378.85, 593,104.68 and 129,140.76 is: 193,723.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,378.85 : 593,104.68 = 129,140.76 : x
  2. Step 2: Convert to fraction form
    395,378.85/593,104.68 = 129,140.76/x
  3. Step 3: Cross multiply
    395,378.85x = 593,104.68 × 129,140.76
  4. Step 4: Simplify right side
    395,378.85x = 76,593,989,134.76
  5. Step 5: Solve for x
    x = 76,593,989,134.76/395,378.85
  6. Step 6: Final answer
    x = 193,723.03

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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.