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Finding the Fourth Proportional to 9,791.55, 14,687.79 and 3,217.59

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Solution

The fourth proportional to 9,791.55, 14,687.79 and 3,217.59 is: 4,826.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,791.55 : 14,687.79 = 3,217.59 : x
  2. Step 2: Convert to fraction form
    9,791.55/14,687.79 = 3,217.59/x
  3. Step 3: Cross multiply
    9,791.55x = 14,687.79 × 3,217.59
  4. Step 4: Simplify right side
    9,791.55x = 47,259,286.23
  5. Step 5: Solve for x
    x = 47,259,286.23/9,791.55
  6. Step 6: Final answer
    x = 4,826.54

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1.5x scale

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.