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Finding the Fourth Proportional to 18,670.26, 27,976.22 and 11,730.18

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Solution

The fourth proportional to 18,670.26, 27,976.22 and 11,730.18 is: 17,576.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.26 : 27,976.22 = 11,730.18 : x
  2. Step 2: Convert to fraction form
    18,670.26/27,976.22 = 11,730.18/x
  3. Step 3: Cross multiply
    18,670.26x = 27,976.22 × 11,730.18
  4. Step 4: Simplify right side
    18,670.26x = 328,166,037.67
  5. Step 5: Solve for x
    x = 328,166,037.67/18,670.26
  6. Step 6: Final answer
    x = 17,576.94

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1.5x scale

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.