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Finding the Fourth Proportional to 18,495.20, 27,760.20 and 9,736.40

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Solution

The fourth proportional to 18,495.20, 27,760.20 and 9,736.40 is: 14,613.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,495.20 : 27,760.20 = 9,736.40 : x
  2. Step 2: Convert to fraction form
    18,495.20/27,760.20 = 9,736.40/x
  3. Step 3: Cross multiply
    18,495.20x = 27,760.20 × 9,736.40
  4. Step 4: Simplify right side
    18,495.20x = 270,284,411.28
  5. Step 5: Solve for x
    x = 270,284,411.28/18,495.20
  6. Step 6: Final answer
    x = 14,613.76

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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.