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Finding the Fourth Proportional to 45,889.99, 68,834.17 and 12,609.92

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Solution

The fourth proportional to 45,889.99, 68,834.17 and 12,609.92 is: 18,914.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,889.99 : 68,834.17 = 12,609.92 : x
  2. Step 2: Convert to fraction form
    45,889.99/68,834.17 = 12,609.92/x
  3. Step 3: Cross multiply
    45,889.99x = 68,834.17 × 12,609.92
  4. Step 4: Simplify right side
    45,889.99x = 867,993,376.97
  5. Step 5: Solve for x
    x = 867,993,376.97/45,889.99
  6. Step 6: Final answer
    x = 18,914.66

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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.