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Finding the Fourth Proportional to 641,372.92, 961,764.90 and 185,860.60

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Solution

The fourth proportional to 641,372.92, 961,764.90 and 185,860.60 is: 278,705.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,372.92 : 961,764.90 = 185,860.60 : x
  2. Step 2: Convert to fraction form
    641,372.92/961,764.90 = 185,860.60/x
  3. Step 3: Cross multiply
    641,372.92x = 961,764.90 × 185,860.60
  4. Step 4: Simplify right side
    641,372.92x = 178,754,201,372.94
  5. Step 5: Solve for x
    x = 178,754,201,372.94/641,372.92
  6. Step 6: Final answer
    x = 278,705.56

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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.