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Finding the Fourth Proportional to 18,291.37, 27,437.07 and 5,143.74

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Solution

The fourth proportional to 18,291.37, 27,437.07 and 5,143.74 is: 7,715.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.37 : 27,437.07 = 5,143.74 : x
  2. Step 2: Convert to fraction form
    18,291.37/27,437.07 = 5,143.74/x
  3. Step 3: Cross multiply
    18,291.37x = 27,437.07 × 5,143.74
  4. Step 4: Simplify right side
    18,291.37x = 141,129,287.88
  5. Step 5: Solve for x
    x = 141,129,287.88/18,291.37
  6. Step 6: Final answer
    x = 7,715.62

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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.