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Finding the Fourth Proportional to 20,960.92, 31,444.52 and 6,922.44

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Solution

The fourth proportional to 20,960.92, 31,444.52 and 6,922.44 is: 10,384.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.92 : 31,444.52 = 6,922.44 : x
  2. Step 2: Convert to fraction form
    20,960.92/31,444.52 = 6,922.44/x
  3. Step 3: Cross multiply
    20,960.92x = 31,444.52 × 6,922.44
  4. Step 4: Simplify right side
    20,960.92x = 217,672,803.03
  5. Step 5: Solve for x
    x = 217,672,803.03/20,960.92
  6. Step 6: Final answer
    x = 10,384.70

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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.