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Finding the Fourth Proportional to 263,806.80, 395,710.20 and 95,407.80

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Solution

The fourth proportional to 263,806.80, 395,710.20 and 95,407.80 is: 143,111.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,806.80 : 395,710.20 = 95,407.80 : x
  2. Step 2: Convert to fraction form
    263,806.80/395,710.20 = 95,407.80/x
  3. Step 3: Cross multiply
    263,806.80x = 395,710.20 × 95,407.80
  4. Step 4: Simplify right side
    263,806.80x = 37,753,839,619.56
  5. Step 5: Solve for x
    x = 37,753,839,619.56/263,806.80
  6. Step 6: Final answer
    x = 143,111.70

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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.