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Finding the Fourth Proportional to 18,553.63, 27,764.75 and 11,536.95

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Solution

The fourth proportional to 18,553.63, 27,764.75 and 11,536.95 is: 17,264.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,553.63 : 27,764.75 = 11,536.95 : x
  2. Step 2: Convert to fraction form
    18,553.63/27,764.75 = 11,536.95/x
  3. Step 3: Cross multiply
    18,553.63x = 27,764.75 × 11,536.95
  4. Step 4: Simplify right side
    18,553.63x = 320,320,603.61
  5. Step 5: Solve for x
    x = 320,320,603.61/18,553.63
  6. Step 6: Final answer
    x = 17,264.58

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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.