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Finding the Fourth Proportional to 18,651.53, 27,963.32 and 11,254.24

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Solution

The fourth proportional to 18,651.53, 27,963.32 and 11,254.24 is: 16,872.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.53 : 27,963.32 = 11,254.24 : x
  2. Step 2: Convert to fraction form
    18,651.53/27,963.32 = 11,254.24/x
  3. Step 3: Cross multiply
    18,651.53x = 27,963.32 × 11,254.24
  4. Step 4: Simplify right side
    18,651.53x = 314,705,914.48
  5. Step 5: Solve for x
    x = 314,705,914.48/18,651.53
  6. Step 6: Final answer
    x = 16,872.93

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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.