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Finding the Fourth Proportional to 20,630.84, 30,947.90 and 6,592.86

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Solution

The fourth proportional to 20,630.84, 30,947.90 and 6,592.86 is: 9,889.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.84 : 30,947.90 = 6,592.86 : x
  2. Step 2: Convert to fraction form
    20,630.84/30,947.90 = 6,592.86/x
  3. Step 3: Cross multiply
    20,630.84x = 30,947.90 × 6,592.86
  4. Step 4: Simplify right side
    20,630.84x = 204,035,139.03
  5. Step 5: Solve for x
    x = 204,035,139.03/20,630.84
  6. Step 6: Final answer
    x = 9,889.81

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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.