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Finding the Fourth Proportional to 18,573.64, 27,828.09 and 15,473.57

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Solution

The fourth proportional to 18,573.64, 27,828.09 and 15,473.57 is: 23,183.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.64 : 27,828.09 = 15,473.57 : x
  2. Step 2: Convert to fraction form
    18,573.64/27,828.09 = 15,473.57/x
  3. Step 3: Cross multiply
    18,573.64x = 27,828.09 × 15,473.57
  4. Step 4: Simplify right side
    18,573.64x = 430,599,759.44
  5. Step 5: Solve for x
    x = 430,599,759.44/18,573.64
  6. Step 6: Final answer
    x = 23,183.38

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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.