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Finding the Fourth Proportional to 18,062.80, 25,305.20 and 18,062.80

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Solution

The fourth proportional to 18,062.80, 25,305.20 and 18,062.80 is: 25,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,062.80 : 25,305.20 = 18,062.80 : x
  2. Step 2: Convert to fraction form
    18,062.80/25,305.20 = 18,062.80/x
  3. Step 3: Cross multiply
    18,062.80x = 25,305.20 × 18,062.80
  4. Step 4: Simplify right side
    18,062.80x = 457,082,766.56
  5. Step 5: Solve for x
    x = 457,082,766.56/18,062.80
  6. Step 6: Final answer
    x = 25,305.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.