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Finding the Fourth Proportional to 17,129.68, 25,697.88 and 7,268.88

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Solution

The fourth proportional to 17,129.68, 25,697.88 and 7,268.88 is: 10,904.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,129.68 : 25,697.88 = 7,268.88 : x
  2. Step 2: Convert to fraction form
    17,129.68/25,697.88 = 7,268.88/x
  3. Step 3: Cross multiply
    17,129.68x = 25,697.88 × 7,268.88
  4. Step 4: Simplify right side
    17,129.68x = 186,794,805.97
  5. Step 5: Solve for x
    x = 186,794,805.97/17,129.68
  6. Step 6: Final answer
    x = 10,904.75

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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.