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Finding the Fourth Proportional to 18,603.52, 27,905.28 and 4,752.52

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Solution

The fourth proportional to 18,603.52, 27,905.28 and 4,752.52 is: 7,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.52 : 27,905.28 = 4,752.52 : x
  2. Step 2: Convert to fraction form
    18,603.52/27,905.28 = 4,752.52/x
  3. Step 3: Cross multiply
    18,603.52x = 27,905.28 × 4,752.52
  4. Step 4: Simplify right side
    18,603.52x = 132,620,401.31
  5. Step 5: Solve for x
    x = 132,620,401.31/18,603.52
  6. Step 6: Final answer
    x = 7,128.78

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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.