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Finding the Fourth Proportional to 18,964.96, 26,174.84 and 11,013.84

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Solution

The fourth proportional to 18,964.96, 26,174.84 and 11,013.84 is: 15,200.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,964.96 : 26,174.84 = 11,013.84 : x
  2. Step 2: Convert to fraction form
    18,964.96/26,174.84 = 11,013.84/x
  3. Step 3: Cross multiply
    18,964.96x = 26,174.84 × 11,013.84
  4. Step 4: Simplify right side
    18,964.96x = 288,285,499.79
  5. Step 5: Solve for x
    x = 288,285,499.79/18,964.96
  6. Step 6: Final answer
    x = 15,200.95

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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.