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Finding the Fourth Proportional to 20,797.44, 28,701.12 and 11,846.88

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Solution

The fourth proportional to 20,797.44, 28,701.12 and 11,846.88 is: 16,349.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.44 : 28,701.12 = 11,846.88 : x
  2. Step 2: Convert to fraction form
    20,797.44/28,701.12 = 11,846.88/x
  3. Step 3: Cross multiply
    20,797.44x = 28,701.12 × 11,846.88
  4. Step 4: Simplify right side
    20,797.44x = 340,018,724.51
  5. Step 5: Solve for x
    x = 340,018,724.51/20,797.44
  6. Step 6: Final answer
    x = 16,349.07

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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.