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Finding the Fourth Proportional to 18,365.78, 27,548.68 and 11,775.62

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Solution

The fourth proportional to 18,365.78, 27,548.68 and 11,775.62 is: 17,663.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,365.78 : 27,548.68 = 11,775.62 : x
  2. Step 2: Convert to fraction form
    18,365.78/27,548.68 = 11,775.62/x
  3. Step 3: Cross multiply
    18,365.78x = 27,548.68 × 11,775.62
  4. Step 4: Simplify right side
    18,365.78x = 324,402,787.18
  5. Step 5: Solve for x
    x = 324,402,787.18/18,365.78
  6. Step 6: Final answer
    x = 17,663.44

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.