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Finding the Fourth Proportional to 13,225.52, 18,251.90 and 7,923.41

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Solution

The fourth proportional to 13,225.52, 18,251.90 and 7,923.41 is: 10,934.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,225.52 : 18,251.90 = 7,923.41 : x
  2. Step 2: Convert to fraction form
    13,225.52/18,251.90 = 7,923.41/x
  3. Step 3: Cross multiply
    13,225.52x = 18,251.90 × 7,923.41
  4. Step 4: Simplify right side
    13,225.52x = 144,617,286.98
  5. Step 5: Solve for x
    x = 144,617,286.98/13,225.52
  6. Step 6: Final answer
    x = 10,934.71

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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.