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Finding the Fourth Proportional to 18,174.72, 25,074.72 and 11,884.80

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Solution

The fourth proportional to 18,174.72, 25,074.72 and 11,884.80 is: 16,396.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,174.72 : 25,074.72 = 11,884.80 : x
  2. Step 2: Convert to fraction form
    18,174.72/25,074.72 = 11,884.80/x
  3. Step 3: Cross multiply
    18,174.72x = 25,074.72 × 11,884.80
  4. Step 4: Simplify right side
    18,174.72x = 298,008,032.26
  5. Step 5: Solve for x
    x = 298,008,032.26/18,174.72
  6. Step 6: Final answer
    x = 16,396.84

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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.