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Finding the Fourth Proportional to 95,751.20, 143,286.60 and 83,406.80

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Solution

The fourth proportional to 95,751.20, 143,286.60 and 83,406.80 is: 124,813.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,751.20 : 143,286.60 = 83,406.80 : x
  2. Step 2: Convert to fraction form
    95,751.20/143,286.60 = 83,406.80/x
  3. Step 3: Cross multiply
    95,751.20x = 143,286.60 × 83,406.80
  4. Step 4: Simplify right side
    95,751.20x = 11,951,076,788.88
  5. Step 5: Solve for x
    x = 11,951,076,788.88/95,751.20
  6. Step 6: Final answer
    x = 124,813.86

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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.