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Finding the Fourth Proportional to 17,151.76, 25,727.20 and 7,917.76

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Solution

The fourth proportional to 17,151.76, 25,727.20 and 7,917.76 is: 11,876.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,151.76 : 25,727.20 = 7,917.76 : x
  2. Step 2: Convert to fraction form
    17,151.76/25,727.20 = 7,917.76/x
  3. Step 3: Cross multiply
    17,151.76x = 25,727.20 × 7,917.76
  4. Step 4: Simplify right side
    17,151.76x = 203,701,795.07
  5. Step 5: Solve for x
    x = 203,701,795.07/17,151.76
  6. Step 6: Final answer
    x = 11,876.44

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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.