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Finding the Fourth Proportional to 18,297.48, 25,241.22 and 11,571.78

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Solution

The fourth proportional to 18,297.48, 25,241.22 and 11,571.78 is: 15,963.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297.48 : 25,241.22 = 11,571.78 : x
  2. Step 2: Convert to fraction form
    18,297.48/25,241.22 = 11,571.78/x
  3. Step 3: Cross multiply
    18,297.48x = 25,241.22 × 11,571.78
  4. Step 4: Simplify right side
    18,297.48x = 292,085,844.77
  5. Step 5: Solve for x
    x = 292,085,844.77/18,297.48
  6. Step 6: Final answer
    x = 15,963.17

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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.