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Finding the Fourth Proportional to 20,574.72, 30,865.92 and 6,733.44

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Solution

The fourth proportional to 20,574.72, 30,865.92 and 6,733.44 is: 10,101.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.72 : 30,865.92 = 6,733.44 : x
  2. Step 2: Convert to fraction form
    20,574.72/30,865.92 = 6,733.44/x
  3. Step 3: Cross multiply
    20,574.72x = 30,865.92 × 6,733.44
  4. Step 4: Simplify right side
    20,574.72x = 207,833,820.36
  5. Step 5: Solve for x
    x = 207,833,820.36/20,574.72
  6. Step 6: Final answer
    x = 10,101.42

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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.