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Finding the Fourth Proportional to 27,119.63, 40,680.16 and 8,651.63

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Solution

The fourth proportional to 27,119.63, 40,680.16 and 8,651.63 is: 12,977.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,119.63 : 40,680.16 = 8,651.63 : x
  2. Step 2: Convert to fraction form
    27,119.63/40,680.16 = 8,651.63/x
  3. Step 3: Cross multiply
    27,119.63x = 40,680.16 × 8,651.63
  4. Step 4: Simplify right side
    27,119.63x = 351,949,467.63
  5. Step 5: Solve for x
    x = 351,949,467.63/27,119.63
  6. Step 6: Final answer
    x = 12,977.67

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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.