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Finding the Fourth Proportional to 18,852.54, 28,273.92 and 7,753.14

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Solution

The fourth proportional to 18,852.54, 28,273.92 and 7,753.14 is: 11,627.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,852.54 : 28,273.92 = 7,753.14 : x
  2. Step 2: Convert to fraction form
    18,852.54/28,273.92 = 7,753.14/x
  3. Step 3: Cross multiply
    18,852.54x = 28,273.92 × 7,753.14
  4. Step 4: Simplify right side
    18,852.54x = 219,211,660.11
  5. Step 5: Solve for x
    x = 219,211,660.11/18,852.54
  6. Step 6: Final answer
    x = 11,627.70

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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.