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Finding the Fourth Proportional to 174,861.80, 261,687.90 and 104,791.40

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Solution

The fourth proportional to 174,861.80, 261,687.90 and 104,791.40 is: 156,824.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,861.80 : 261,687.90 = 104,791.40 : x
  2. Step 2: Convert to fraction form
    174,861.80/261,687.90 = 104,791.40/x
  3. Step 3: Cross multiply
    174,861.80x = 261,687.90 × 104,791.40
  4. Step 4: Simplify right side
    174,861.80x = 27,422,641,404.06
  5. Step 5: Solve for x
    x = 27,422,641,404.06/174,861.80
  6. Step 6: Final answer
    x = 156,824.65

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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.