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Finding the Fourth Proportional to 18,280.53, 27,418.64 and 5,134.05

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Solution

The fourth proportional to 18,280.53, 27,418.64 and 5,134.05 is: 7,700.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,280.53 : 27,418.64 = 5,134.05 : x
  2. Step 2: Convert to fraction form
    18,280.53/27,418.64 = 5,134.05/x
  3. Step 3: Cross multiply
    18,280.53x = 27,418.64 × 5,134.05
  4. Step 4: Simplify right side
    18,280.53x = 140,768,643.02
  5. Step 5: Solve for x
    x = 140,768,643.02/18,280.53
  6. Step 6: Final answer
    x = 7,700.47

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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.