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Finding the Fourth Proportional to 18,793.13, 28,169.32 and 9,410.53

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Solution

The fourth proportional to 18,793.13, 28,169.32 and 9,410.53 is: 14,105.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.13 : 28,169.32 = 9,410.53 : x
  2. Step 2: Convert to fraction form
    18,793.13/28,169.32 = 9,410.53/x
  3. Step 3: Cross multiply
    18,793.13x = 28,169.32 × 9,410.53
  4. Step 4: Simplify right side
    18,793.13x = 265,088,324.89
  5. Step 5: Solve for x
    x = 265,088,324.89/18,793.13
  6. Step 6: Final answer
    x = 14,105.60

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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.