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Finding the Fourth Proportional to 17,189.52, 25,785.64 and 7,328.88

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Solution

The fourth proportional to 17,189.52, 25,785.64 and 7,328.88 is: 10,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,189.52 : 25,785.64 = 7,328.88 : x
  2. Step 2: Convert to fraction form
    17,189.52/25,785.64 = 7,328.88/x
  3. Step 3: Cross multiply
    17,189.52x = 25,785.64 × 7,328.88
  4. Step 4: Simplify right side
    17,189.52x = 188,979,861.28
  5. Step 5: Solve for x
    x = 188,979,861.28/17,189.52
  6. Step 6: Final answer
    x = 10,993.90

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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.