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Finding the Fourth Proportional to 20,512.48, 30,765.92 and 7,362.96

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Solution

The fourth proportional to 20,512.48, 30,765.92 and 7,362.96 is: 11,043.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.48 : 30,765.92 = 7,362.96 : x
  2. Step 2: Convert to fraction form
    20,512.48/30,765.92 = 7,362.96/x
  3. Step 3: Cross multiply
    20,512.48x = 30,765.92 × 7,362.96
  4. Step 4: Simplify right side
    20,512.48x = 226,528,238.32
  5. Step 5: Solve for x
    x = 226,528,238.32/20,512.48
  6. Step 6: Final answer
    x = 11,043.43

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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.