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Finding the Fourth Proportional to 18,793.80, 28,190.70 and 10,024.20

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Solution

The fourth proportional to 18,793.80, 28,190.70 and 10,024.20 is: 15,036.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.80 : 28,190.70 = 10,024.20 : x
  2. Step 2: Convert to fraction form
    18,793.80/28,190.70 = 10,024.20/x
  3. Step 3: Cross multiply
    18,793.80x = 28,190.70 × 10,024.20
  4. Step 4: Simplify right side
    18,793.80x = 282,589,214.94
  5. Step 5: Solve for x
    x = 282,589,214.94/18,793.80
  6. Step 6: Final answer
    x = 15,036.30

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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.