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Finding the Fourth Proportional to 18,466.92, 27,700.43 and 7,374.51

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Solution

The fourth proportional to 18,466.92, 27,700.43 and 7,374.51 is: 11,061.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,466.92 : 27,700.43 = 7,374.51 : x
  2. Step 2: Convert to fraction form
    18,466.92/27,700.43 = 7,374.51/x
  3. Step 3: Cross multiply
    18,466.92x = 27,700.43 × 7,374.51
  4. Step 4: Simplify right side
    18,466.92x = 204,277,061.17
  5. Step 5: Solve for x
    x = 204,277,061.17/18,466.92
  6. Step 6: Final answer
    x = 11,061.78

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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.