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Finding the Fourth Proportional to 18,659.15, 25,722.42 and 14,175.11

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Solution

The fourth proportional to 18,659.15, 25,722.42 and 14,175.11 is: 19,540.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,659.15 : 25,722.42 = 14,175.11 : x
  2. Step 2: Convert to fraction form
    18,659.15/25,722.42 = 14,175.11/x
  3. Step 3: Cross multiply
    18,659.15x = 25,722.42 × 14,175.11
  4. Step 4: Simplify right side
    18,659.15x = 364,618,132.97
  5. Step 5: Solve for x
    x = 364,618,132.97/18,659.15
  6. Step 6: Final answer
    x = 19,540.98

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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.