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Finding the Fourth Proportional to 7,275.44, 10,040.16 and 3,963.44

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Solution

The fourth proportional to 7,275.44, 10,040.16 and 3,963.44 is: 5,469.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,275.44 : 10,040.16 = 3,963.44 : x
  2. Step 2: Convert to fraction form
    7,275.44/10,040.16 = 3,963.44/x
  3. Step 3: Cross multiply
    7,275.44x = 10,040.16 × 3,963.44
  4. Step 4: Simplify right side
    7,275.44x = 39,793,571.75
  5. Step 5: Solve for x
    x = 39,793,571.75/7,275.44
  6. Step 6: Final answer
    x = 5,469.58

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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.