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Finding the Fourth Proportional to 21,786.48, 32,649.48 and 11,377.44

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Solution

The fourth proportional to 21,786.48, 32,649.48 and 11,377.44 is: 17,050.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,786.48 : 32,649.48 = 11,377.44 : x
  2. Step 2: Convert to fraction form
    21,786.48/32,649.48 = 11,377.44/x
  3. Step 3: Cross multiply
    21,786.48x = 32,649.48 × 11,377.44
  4. Step 4: Simplify right side
    21,786.48x = 371,467,499.73
  5. Step 5: Solve for x
    x = 371,467,499.73/21,786.48
  6. Step 6: Final answer
    x = 17,050.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.