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Finding the Fourth Proportional to 18,998.55, 26,224.56 and 13,049.91

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Solution

The fourth proportional to 18,998.55, 26,224.56 and 13,049.91 is: 18,013.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.55 : 26,224.56 = 13,049.91 : x
  2. Step 2: Convert to fraction form
    18,998.55/26,224.56 = 13,049.91/x
  3. Step 3: Cross multiply
    18,998.55x = 26,224.56 × 13,049.91
  4. Step 4: Simplify right side
    18,998.55x = 342,228,147.79
  5. Step 5: Solve for x
    x = 342,228,147.79/18,998.55
  6. Step 6: Final answer
    x = 18,013.38

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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.