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Finding the Fourth Proportional to 620,178.14, 928,910.92 and 439,716.56

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Solution

The fourth proportional to 620,178.14, 928,910.92 and 439,716.56 is: 658,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,178.14 : 928,910.92 = 439,716.56 : x
  2. Step 2: Convert to fraction form
    620,178.14/928,910.92 = 439,716.56/x
  3. Step 3: Cross multiply
    620,178.14x = 928,910.92 × 439,716.56
  4. Step 4: Simplify right side
    620,178.14x = 408,457,510,867.27
  5. Step 5: Solve for x
    x = 408,457,510,867.27/620,178.14
  6. Step 6: Final answer
    x = 658,613.20

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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.