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Finding the Fourth Proportional to 20,796.58, 28,700.94 and 11,846.86

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Solution

The fourth proportional to 20,796.58, 28,700.94 and 11,846.86 is: 16,349.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.58 : 28,700.94 = 11,846.86 : x
  2. Step 2: Convert to fraction form
    20,796.58/28,700.94 = 11,846.86/x
  3. Step 3: Cross multiply
    20,796.58x = 28,700.94 × 11,846.86
  4. Step 4: Simplify right side
    20,796.58x = 340,016,018.05
  5. Step 5: Solve for x
    x = 340,016,018.05/20,796.58
  6. Step 6: Final answer
    x = 16,349.61

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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.