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Finding the Fourth Proportional to 14,914.92, 20,586.42 and 8,630.94

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Solution

The fourth proportional to 14,914.92, 20,586.42 and 8,630.94 is: 11,912.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,914.92 : 20,586.42 = 8,630.94 : x
  2. Step 2: Convert to fraction form
    14,914.92/20,586.42 = 8,630.94/x
  3. Step 3: Cross multiply
    14,914.92x = 20,586.42 × 8,630.94
  4. Step 4: Simplify right side
    14,914.92x = 177,680,155.83
  5. Step 5: Solve for x
    x = 177,680,155.83/14,914.92
  6. Step 6: Final answer
    x = 11,912.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.