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Finding the Fourth Proportional to 18,714, 25,843.14 and 14,727.99

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Solution

The fourth proportional to 18,714, 25,843.14 and 14,727.99 is: 20,338.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,714 : 25,843.14 = 14,727.99 : x
  2. Step 2: Convert to fraction form
    18,714/25,843.14 = 14,727.99/x
  3. Step 3: Cross multiply
    18,714x = 25,843.14 × 14,727.99
  4. Step 4: Simplify right side
    18,714x = 380,617,507.49
  5. Step 5: Solve for x
    x = 380,617,507.49/18,714
  6. Step 6: Final answer
    x = 20,338.65

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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.