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Finding the Fourth Proportional to 620,859.44, 856,107.96 and 419,305.52

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Solution

The fourth proportional to 620,859.44, 856,107.96 and 419,305.52 is: 578,183.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,859.44 : 856,107.96 = 419,305.52 : x
  2. Step 2: Convert to fraction form
    620,859.44/856,107.96 = 419,305.52/x
  3. Step 3: Cross multiply
    620,859.44x = 856,107.96 × 419,305.52
  4. Step 4: Simplify right side
    620,859.44x = 358,970,793,343.94
  5. Step 5: Solve for x
    x = 358,970,793,343.94/620,859.44
  6. Step 6: Final answer
    x = 578,183.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.