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Finding the Fourth Proportional to 8,261.33, 12,360.92 and 4,917.24

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Solution

The fourth proportional to 8,261.33, 12,360.92 and 4,917.24 is: 7,357.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.33 : 12,360.92 = 4,917.24 : x
  2. Step 2: Convert to fraction form
    8,261.33/12,360.92 = 4,917.24/x
  3. Step 3: Cross multiply
    8,261.33x = 12,360.92 × 4,917.24
  4. Step 4: Simplify right side
    8,261.33x = 60,781,585.67
  5. Step 5: Solve for x
    x = 60,781,585.67/8,261.33
  6. Step 6: Final answer
    x = 7,357.37

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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.