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Finding the Fourth Proportional to 20,473.56, 30,713.58 and 7,325.64

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Solution

The fourth proportional to 20,473.56, 30,713.58 and 7,325.64 is: 10,989.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.56 : 30,713.58 = 7,325.64 : x
  2. Step 2: Convert to fraction form
    20,473.56/30,713.58 = 7,325.64/x
  3. Step 3: Cross multiply
    20,473.56x = 30,713.58 × 7,325.64
  4. Step 4: Simplify right side
    20,473.56x = 224,996,630.19
  5. Step 5: Solve for x
    x = 224,996,630.19/20,473.56
  6. Step 6: Final answer
    x = 10,989.62

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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.