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Finding the Fourth Proportional to 18,460.65, 27,716.46 and 10,153.68

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Solution

The fourth proportional to 18,460.65, 27,716.46 and 10,153.68 is: 15,244.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,460.65 : 27,716.46 = 10,153.68 : x
  2. Step 2: Convert to fraction form
    18,460.65/27,716.46 = 10,153.68/x
  3. Step 3: Cross multiply
    18,460.65x = 27,716.46 × 10,153.68
  4. Step 4: Simplify right side
    18,460.65x = 281,424,065.57
  5. Step 5: Solve for x
    x = 281,424,065.57/18,460.65
  6. Step 6: Final answer
    x = 15,244.54

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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.