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Finding the Fourth Proportional to 17,198.80, 25,784.12 and 7,958.48

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Solution

The fourth proportional to 17,198.80, 25,784.12 and 7,958.48 is: 11,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,198.80 : 25,784.12 = 7,958.48 : x
  2. Step 2: Convert to fraction form
    17,198.80/25,784.12 = 7,958.48/x
  3. Step 3: Cross multiply
    17,198.80x = 25,784.12 × 7,958.48
  4. Step 4: Simplify right side
    17,198.80x = 205,202,403.34
  5. Step 5: Solve for x
    x = 205,202,403.34/17,198.80
  6. Step 6: Final answer
    x = 11,931.20

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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.