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Finding the Fourth Proportional to 18,770.48, 25,879.74 and 12,044.24

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Solution

The fourth proportional to 18,770.48, 25,879.74 and 12,044.24 is: 16,605.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.48 : 25,879.74 = 12,044.24 : x
  2. Step 2: Convert to fraction form
    18,770.48/25,879.74 = 12,044.24/x
  3. Step 3: Cross multiply
    18,770.48x = 25,879.74 × 12,044.24
  4. Step 4: Simplify right side
    18,770.48x = 311,701,799.70
  5. Step 5: Solve for x
    x = 311,701,799.70/18,770.48
  6. Step 6: Final answer
    x = 16,605.96

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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.