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Finding the Fourth Proportional to 17,182.88, 25,780.08 and 7,317.92

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Solution

The fourth proportional to 17,182.88, 25,780.08 and 7,317.92 is: 10,979.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,182.88 : 25,780.08 = 7,317.92 : x
  2. Step 2: Convert to fraction form
    17,182.88/25,780.08 = 7,317.92/x
  3. Step 3: Cross multiply
    17,182.88x = 25,780.08 × 7,317.92
  4. Step 4: Simplify right side
    17,182.88x = 188,656,563.03
  5. Step 5: Solve for x
    x = 188,656,563.03/17,182.88
  6. Step 6: Final answer
    x = 10,979.33

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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.