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Finding the Fourth Proportional to 12,245.48, 18,360.92 and 4,851

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Solution

The fourth proportional to 12,245.48, 18,360.92 and 4,851 is: 7,273.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,245.48 : 18,360.92 = 4,851 : x
  2. Step 2: Convert to fraction form
    12,245.48/18,360.92 = 4,851/x
  3. Step 3: Cross multiply
    12,245.48x = 18,360.92 × 4,851
  4. Step 4: Simplify right side
    12,245.48x = 89,068,822.92
  5. Step 5: Solve for x
    x = 89,068,822.92/12,245.48
  6. Step 6: Final answer
    x = 7,273.61

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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.