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Finding the Fourth Proportional to 175,765.92, 263,609.40 and 80,905.20

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Solution

The fourth proportional to 175,765.92, 263,609.40 and 80,905.20 is: 121,339.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,765.92 : 263,609.40 = 80,905.20 : x
  2. Step 2: Convert to fraction form
    175,765.92/263,609.40 = 80,905.20/x
  3. Step 3: Cross multiply
    175,765.92x = 263,609.40 × 80,905.20
  4. Step 4: Simplify right side
    175,765.92x = 21,327,371,228.88
  5. Step 5: Solve for x
    x = 21,327,371,228.88/175,765.92
  6. Step 6: Final answer
    x = 121,339.63

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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.