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Finding the Fourth Proportional to 7,062.30, 9,744.51 and 3,917.82

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Solution

The fourth proportional to 7,062.30, 9,744.51 and 3,917.82 is: 5,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,062.30 : 9,744.51 = 3,917.82 : x
  2. Step 2: Convert to fraction form
    7,062.30/9,744.51 = 3,917.82/x
  3. Step 3: Cross multiply
    7,062.30x = 9,744.51 × 3,917.82
  4. Step 4: Simplify right side
    7,062.30x = 38,177,236.17
  5. Step 5: Solve for x
    x = 38,177,236.17/7,062.30
  6. Step 6: Final answer
    x = 5,405.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.