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Finding the Fourth Proportional to 18,600.52, 27,900.78 and 4,749.52

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Solution

The fourth proportional to 18,600.52, 27,900.78 and 4,749.52 is: 7,124.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,600.52 : 27,900.78 = 4,749.52 : x
  2. Step 2: Convert to fraction form
    18,600.52/27,900.78 = 4,749.52/x
  3. Step 3: Cross multiply
    18,600.52x = 27,900.78 × 4,749.52
  4. Step 4: Simplify right side
    18,600.52x = 132,515,312.63
  5. Step 5: Solve for x
    x = 132,515,312.63/18,600.52
  6. Step 6: Final answer
    x = 7,124.28

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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.