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Finding the Fourth Proportional to 20,562.12, 30,662.62 and 20,375.01

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Solution

The fourth proportional to 20,562.12, 30,662.62 and 20,375.01 is: 30,383.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.12 : 30,662.62 = 20,375.01 : x
  2. Step 2: Convert to fraction form
    20,562.12/30,662.62 = 20,375.01/x
  3. Step 3: Cross multiply
    20,562.12x = 30,662.62 × 20,375.01
  4. Step 4: Simplify right side
    20,562.12x = 624,751,138.19
  5. Step 5: Solve for x
    x = 624,751,138.19/20,562.12
  6. Step 6: Final answer
    x = 30,383.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.