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Finding the Fourth Proportional to 20,593.56, 30,890.28 and 7,445.94

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Solution

The fourth proportional to 20,593.56, 30,890.28 and 7,445.94 is: 11,168.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,593.56 : 30,890.28 = 7,445.94 : x
  2. Step 2: Convert to fraction form
    20,593.56/30,890.28 = 7,445.94/x
  3. Step 3: Cross multiply
    20,593.56x = 30,890.28 × 7,445.94
  4. Step 4: Simplify right side
    20,593.56x = 230,007,171.46
  5. Step 5: Solve for x
    x = 230,007,171.46/20,593.56
  6. Step 6: Final answer
    x = 11,168.89

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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.