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Finding the Fourth Proportional to 18,658.24, 25,727.04 and 13,934.56

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Solution

The fourth proportional to 18,658.24, 25,727.04 and 13,934.56 is: 19,213.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.24 : 25,727.04 = 13,934.56 : x
  2. Step 2: Convert to fraction form
    18,658.24/25,727.04 = 13,934.56/x
  3. Step 3: Cross multiply
    18,658.24x = 25,727.04 × 13,934.56
  4. Step 4: Simplify right side
    18,658.24x = 358,494,982.50
  5. Step 5: Solve for x
    x = 358,494,982.50/18,658.24
  6. Step 6: Final answer
    x = 19,213.76

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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.