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Finding the Fourth Proportional to 8,474.92, 12,660.65 and 6,745.48

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Solution

The fourth proportional to 8,474.92, 12,660.65 and 6,745.48 is: 10,077.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.92 : 12,660.65 = 6,745.48 : x
  2. Step 2: Convert to fraction form
    8,474.92/12,660.65 = 6,745.48/x
  3. Step 3: Cross multiply
    8,474.92x = 12,660.65 × 6,745.48
  4. Step 4: Simplify right side
    8,474.92x = 85,402,161.36
  5. Step 5: Solve for x
    x = 85,402,161.36/8,474.92
  6. Step 6: Final answer
    x = 10,077.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.