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Finding the Fourth Proportional to 18,461.65, 27,717.96 and 10,154.68

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Solution

The fourth proportional to 18,461.65, 27,717.96 and 10,154.68 is: 15,246.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.65 : 27,717.96 = 10,154.68 : x
  2. Step 2: Convert to fraction form
    18,461.65/27,717.96 = 10,154.68/x
  3. Step 3: Cross multiply
    18,461.65x = 27,717.96 × 10,154.68
  4. Step 4: Simplify right side
    18,461.65x = 281,467,014.05
  5. Step 5: Solve for x
    x = 281,467,014.05/18,461.65
  6. Step 6: Final answer
    x = 15,246.04

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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.