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Finding the Fourth Proportional to 7,481.61, 10,321.14 and 4,791.55

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Solution

The fourth proportional to 7,481.61, 10,321.14 and 4,791.55 is: 6,610.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481.61 : 10,321.14 = 4,791.55 : x
  2. Step 2: Convert to fraction form
    7,481.61/10,321.14 = 4,791.55/x
  3. Step 3: Cross multiply
    7,481.61x = 10,321.14 × 4,791.55
  4. Step 4: Simplify right side
    7,481.61x = 49,454,258.37
  5. Step 5: Solve for x
    x = 49,454,258.37/7,481.61
  6. Step 6: Final answer
    x = 6,610.11

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1.5x scale

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.