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Finding the Fourth Proportional to 18,566.72, 27,850.53 and 4,715.72

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Solution

The fourth proportional to 18,566.72, 27,850.53 and 4,715.72 is: 7,073.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,566.72 : 27,850.53 = 4,715.72 : x
  2. Step 2: Convert to fraction form
    18,566.72/27,850.53 = 4,715.72/x
  3. Step 3: Cross multiply
    18,566.72x = 27,850.53 × 4,715.72
  4. Step 4: Simplify right side
    18,566.72x = 131,335,284.20
  5. Step 5: Solve for x
    x = 131,335,284.20/18,566.72
  6. Step 6: Final answer
    x = 7,073.69

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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.