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Finding the Fourth Proportional to 18,698.37, 25,837.97 and 17,787.21

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Solution

The fourth proportional to 18,698.37, 25,837.97 and 17,787.21 is: 24,578.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.37 : 25,837.97 = 17,787.21 : x
  2. Step 2: Convert to fraction form
    18,698.37/25,837.97 = 17,787.21/x
  3. Step 3: Cross multiply
    18,698.37x = 25,837.97 × 17,787.21
  4. Step 4: Simplify right side
    18,698.37x = 459,585,309.43
  5. Step 5: Solve for x
    x = 459,585,309.43/18,698.37
  6. Step 6: Final answer
    x = 24,578.90

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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.