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Finding the Fourth Proportional to 6,798.41, 9,380.43 and 4,912.86

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Solution

The fourth proportional to 6,798.41, 9,380.43 and 4,912.86 is: 6,778.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,798.41 : 9,380.43 = 4,912.86 : x
  2. Step 2: Convert to fraction form
    6,798.41/9,380.43 = 4,912.86/x
  3. Step 3: Cross multiply
    6,798.41x = 9,380.43 × 4,912.86
  4. Step 4: Simplify right side
    6,798.41x = 46,084,739.33
  5. Step 5: Solve for x
    x = 46,084,739.33/6,798.41
  6. Step 6: Final answer
    x = 6,778.76

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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.