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Finding the Fourth Proportional to 16,245.90, 22,419.42 and 8,793.90

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Solution

The fourth proportional to 16,245.90, 22,419.42 and 8,793.90 is: 12,135.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,245.90 : 22,419.42 = 8,793.90 : x
  2. Step 2: Convert to fraction form
    16,245.90/22,419.42 = 8,793.90/x
  3. Step 3: Cross multiply
    16,245.90x = 22,419.42 × 8,793.90
  4. Step 4: Simplify right side
    16,245.90x = 197,154,137.54
  5. Step 5: Solve for x
    x = 197,154,137.54/16,245.90
  6. Step 6: Final answer
    x = 12,135.62

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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.