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Finding the Fourth Proportional to 18,658.93, 25,722.12 and 14,174.89

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Solution

The fourth proportional to 18,658.93, 25,722.12 and 14,174.89 is: 19,540.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.93 : 25,722.12 = 14,174.89 : x
  2. Step 2: Convert to fraction form
    18,658.93/25,722.12 = 14,174.89/x
  3. Step 3: Cross multiply
    18,658.93x = 25,722.12 × 14,174.89
  4. Step 4: Simplify right side
    18,658.93x = 364,608,221.57
  5. Step 5: Solve for x
    x = 364,608,221.57/18,658.93
  6. Step 6: Final answer
    x = 19,540.68

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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.