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Finding the Fourth Proportional to 18,634.51, 27,979.44 and 7,562.89

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Solution

The fourth proportional to 18,634.51, 27,979.44 and 7,562.89 is: 11,355.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,634.51 : 27,979.44 = 7,562.89 : x
  2. Step 2: Convert to fraction form
    18,634.51/27,979.44 = 7,562.89/x
  3. Step 3: Cross multiply
    18,634.51x = 27,979.44 × 7,562.89
  4. Step 4: Simplify right side
    18,634.51x = 211,605,426.98
  5. Step 5: Solve for x
    x = 211,605,426.98/18,634.51
  6. Step 6: Final answer
    x = 11,355.57

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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.