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Finding the Fourth Proportional to 5,745.75, 7,928.71 and 3,355.03

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Solution

The fourth proportional to 5,745.75, 7,928.71 and 3,355.03 is: 4,629.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,745.75 : 7,928.71 = 3,355.03 : x
  2. Step 2: Convert to fraction form
    5,745.75/7,928.71 = 3,355.03/x
  3. Step 3: Cross multiply
    5,745.75x = 7,928.71 × 3,355.03
  4. Step 4: Simplify right side
    5,745.75x = 26,601,059.91
  5. Step 5: Solve for x
    x = 26,601,059.91/5,745.75
  6. Step 6: Final answer
    x = 4,629.69

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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.