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Finding the Fourth Proportional to 14,796.96, 20,419.52 and 8,509.44

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Solution

The fourth proportional to 14,796.96, 20,419.52 and 8,509.44 is: 11,742.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,796.96 : 20,419.52 = 8,509.44 : x
  2. Step 2: Convert to fraction form
    14,796.96/20,419.52 = 8,509.44/x
  3. Step 3: Cross multiply
    14,796.96x = 20,419.52 × 8,509.44
  4. Step 4: Simplify right side
    14,796.96x = 173,758,680.27
  5. Step 5: Solve for x
    x = 173,758,680.27/14,796.96
  6. Step 6: Final answer
    x = 11,742.86

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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.