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Finding the Fourth Proportional to 18,010.71, 27,013.94 and 4,864.11

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Solution

The fourth proportional to 18,010.71, 27,013.94 and 4,864.11 is: 7,295.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,010.71 : 27,013.94 = 4,864.11 : x
  2. Step 2: Convert to fraction form
    18,010.71/27,013.94 = 4,864.11/x
  3. Step 3: Cross multiply
    18,010.71x = 27,013.94 × 4,864.11
  4. Step 4: Simplify right side
    18,010.71x = 131,398,775.69
  5. Step 5: Solve for x
    x = 131,398,775.69/18,010.71
  6. Step 6: Final answer
    x = 7,295.59

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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.