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Finding the Fourth Proportional to 18,087.28, 27,132.60 and 5,607.40

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Solution

The fourth proportional to 18,087.28, 27,132.60 and 5,607.40 is: 8,411.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087.28 : 27,132.60 = 5,607.40 : x
  2. Step 2: Convert to fraction form
    18,087.28/27,132.60 = 5,607.40/x
  3. Step 3: Cross multiply
    18,087.28x = 27,132.60 × 5,607.40
  4. Step 4: Simplify right side
    18,087.28x = 152,143,341.24
  5. Step 5: Solve for x
    x = 152,143,341.24/18,087.28
  6. Step 6: Final answer
    x = 8,411.62

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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.