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Finding the Fourth Proportional to 19,672.39, 29,506.15 and 7,974.37

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Solution

The fourth proportional to 19,672.39, 29,506.15 and 7,974.37 is: 11,960.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,672.39 : 29,506.15 = 7,974.37 : x
  2. Step 2: Convert to fraction form
    19,672.39/29,506.15 = 7,974.37/x
  3. Step 3: Cross multiply
    19,672.39x = 29,506.15 × 7,974.37
  4. Step 4: Simplify right side
    19,672.39x = 235,292,769.97
  5. Step 5: Solve for x
    x = 235,292,769.97/19,672.39
  6. Step 6: Final answer
    x = 11,960.56

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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.