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Finding the Fourth Proportional to 11,375.92, 17,060.64 and 7,209.64

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Solution

The fourth proportional to 11,375.92, 17,060.64 and 7,209.64 is: 10,812.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,375.92 : 17,060.64 = 7,209.64 : x
  2. Step 2: Convert to fraction form
    11,375.92/17,060.64 = 7,209.64/x
  3. Step 3: Cross multiply
    11,375.92x = 17,060.64 × 7,209.64
  4. Step 4: Simplify right side
    11,375.92x = 123,001,072.57
  5. Step 5: Solve for x
    x = 123,001,072.57/11,375.92
  6. Step 6: Final answer
    x = 10,812.41

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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.