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Finding the Fourth Proportional to 19,190.96, 26,472.12 and 11,726

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Solution

The fourth proportional to 19,190.96, 26,472.12 and 11,726 is: 16,174.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,190.96 : 26,472.12 = 11,726 : x
  2. Step 2: Convert to fraction form
    19,190.96/26,472.12 = 11,726/x
  3. Step 3: Cross multiply
    19,190.96x = 26,472.12 × 11,726
  4. Step 4: Simplify right side
    19,190.96x = 310,412,079.12
  5. Step 5: Solve for x
    x = 310,412,079.12/19,190.96
  6. Step 6: Final answer
    x = 16,174.91

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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.