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Finding the Fourth Proportional to 19,174.59, 26,456.84 and 11,215.26

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Solution

The fourth proportional to 19,174.59, 26,456.84 and 11,215.26 is: 15,474.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,174.59 : 26,456.84 = 11,215.26 : x
  2. Step 2: Convert to fraction form
    19,174.59/26,456.84 = 11,215.26/x
  3. Step 3: Cross multiply
    19,174.59x = 26,456.84 × 11,215.26
  4. Step 4: Simplify right side
    19,174.59x = 296,720,339.38
  5. Step 5: Solve for x
    x = 296,720,339.38/19,174.59
  6. Step 6: Final answer
    x = 15,474.66

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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.