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Finding the Fourth Proportional to 13,571.26, 18,729.44 and 7,604.26

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Solution

The fourth proportional to 13,571.26, 18,729.44 and 7,604.26 is: 10,494.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.26 : 18,729.44 = 7,604.26 : x
  2. Step 2: Convert to fraction form
    13,571.26/18,729.44 = 7,604.26/x
  3. Step 3: Cross multiply
    13,571.26x = 18,729.44 × 7,604.26
  4. Step 4: Simplify right side
    13,571.26x = 142,423,493.39
  5. Step 5: Solve for x
    x = 142,423,493.39/13,571.26
  6. Step 6: Final answer
    x = 10,494.49

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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.