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Finding the Fourth Proportional to 27,080.64, 40,621.78 and 7,359.61

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Solution

The fourth proportional to 27,080.64, 40,621.78 and 7,359.61 is: 11,039.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,080.64 : 40,621.78 = 7,359.61 : x
  2. Step 2: Convert to fraction form
    27,080.64/40,621.78 = 7,359.61/x
  3. Step 3: Cross multiply
    27,080.64x = 40,621.78 × 7,359.61
  4. Step 4: Simplify right side
    27,080.64x = 298,960,458.31
  5. Step 5: Solve for x
    x = 298,960,458.31/27,080.64
  6. Step 6: Final answer
    x = 11,039.64

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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.