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Finding the Fourth Proportional to 263,403.92, 395,194.52 and 83,518.64

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Solution

The fourth proportional to 263,403.92, 395,194.52 and 83,518.64 is: 125,306.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,403.92 : 395,194.52 = 83,518.64 : x
  2. Step 2: Convert to fraction form
    263,403.92/395,194.52 = 83,518.64/x
  3. Step 3: Cross multiply
    263,403.92x = 395,194.52 × 83,518.64
  4. Step 4: Simplify right side
    263,403.92x = 33,006,108,845.85
  5. Step 5: Solve for x
    x = 33,006,108,845.85/263,403.92
  6. Step 6: Final answer
    x = 125,306.07

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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.