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Finding the Fourth Proportional to 18,777.80, 25,913.39 and 11,704.23

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Solution

The fourth proportional to 18,777.80, 25,913.39 and 11,704.23 is: 16,151.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.80 : 25,913.39 = 11,704.23 : x
  2. Step 2: Convert to fraction form
    18,777.80/25,913.39 = 11,704.23/x
  3. Step 3: Cross multiply
    18,777.80x = 25,913.39 × 11,704.23
  4. Step 4: Simplify right side
    18,777.80x = 303,296,218.12
  5. Step 5: Solve for x
    x = 303,296,218.12/18,777.80
  6. Step 6: Final answer
    x = 16,151.85

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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.