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Finding the Fourth Proportional to 18,583.17, 27,874.50 and 8,715.45

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Solution

The fourth proportional to 18,583.17, 27,874.50 and 8,715.45 is: 13,073.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,583.17 : 27,874.50 = 8,715.45 : x
  2. Step 2: Convert to fraction form
    18,583.17/27,874.50 = 8,715.45/x
  3. Step 3: Cross multiply
    18,583.17x = 27,874.50 × 8,715.45
  4. Step 4: Simplify right side
    18,583.17x = 242,938,811.03
  5. Step 5: Solve for x
    x = 242,938,811.03/18,583.17
  6. Step 6: Final answer
    x = 13,073.06

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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.