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Finding the Fourth Proportional to 13,753.86, 20,651.84 and 12,124.14

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Solution

The fourth proportional to 13,753.86, 20,651.84 and 12,124.14 is: 18,204.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.86 : 20,651.84 = 12,124.14 : x
  2. Step 2: Convert to fraction form
    13,753.86/20,651.84 = 12,124.14/x
  3. Step 3: Cross multiply
    13,753.86x = 20,651.84 × 12,124.14
  4. Step 4: Simplify right side
    13,753.86x = 250,385,799.42
  5. Step 5: Solve for x
    x = 250,385,799.42/13,753.86
  6. Step 6: Final answer
    x = 18,204.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.