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Finding the Fourth Proportional to 10,908.75, 15,054.08 and 5,940.75

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Solution

The fourth proportional to 10,908.75, 15,054.08 and 5,940.75 is: 8,198.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908.75 : 15,054.08 = 5,940.75 : x
  2. Step 2: Convert to fraction form
    10,908.75/15,054.08 = 5,940.75/x
  3. Step 3: Cross multiply
    10,908.75x = 15,054.08 × 5,940.75
  4. Step 4: Simplify right side
    10,908.75x = 89,432,496.06
  5. Step 5: Solve for x
    x = 89,432,496.06/10,908.75
  6. Step 6: Final answer
    x = 8,198.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.