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Finding the Fourth Proportional to 6,917.01, 10,377.60 and 3,221.46

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Solution

The fourth proportional to 6,917.01, 10,377.60 and 3,221.46 is: 4,833.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,917.01 : 10,377.60 = 3,221.46 : x
  2. Step 2: Convert to fraction form
    6,917.01/10,377.60 = 3,221.46/x
  3. Step 3: Cross multiply
    6,917.01x = 10,377.60 × 3,221.46
  4. Step 4: Simplify right side
    6,917.01x = 33,431,023.30
  5. Step 5: Solve for x
    x = 33,431,023.30/6,917.01
  6. Step 6: Final answer
    x = 4,833.16

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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.