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Finding the Fourth Proportional to 18,601.92, 25,668.50 and 10,643.67

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Solution

The fourth proportional to 18,601.92, 25,668.50 and 10,643.67 is: 14,687.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.92 : 25,668.50 = 10,643.67 : x
  2. Step 2: Convert to fraction form
    18,601.92/25,668.50 = 10,643.67/x
  3. Step 3: Cross multiply
    18,601.92x = 25,668.50 × 10,643.67
  4. Step 4: Simplify right side
    18,601.92x = 273,206,990.18
  5. Step 5: Solve for x
    x = 273,206,990.18/18,601.92
  6. Step 6: Final answer
    x = 14,687.03

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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.