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Finding the Fourth Proportional to 18,769.65, 25,902.12 and 11,696.10

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Solution

The fourth proportional to 18,769.65, 25,902.12 and 11,696.10 is: 16,140.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,769.65 : 25,902.12 = 11,696.10 : x
  2. Step 2: Convert to fraction form
    18,769.65/25,902.12 = 11,696.10/x
  3. Step 3: Cross multiply
    18,769.65x = 25,902.12 × 11,696.10
  4. Step 4: Simplify right side
    18,769.65x = 302,953,785.73
  5. Step 5: Solve for x
    x = 302,953,785.73/18,769.65
  6. Step 6: Final answer
    x = 16,140.62

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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.