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Finding the Fourth Proportional to 18,628.62, 27,942.82 and 7,535.16

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Solution

The fourth proportional to 18,628.62, 27,942.82 and 7,535.16 is: 11,302.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,628.62 : 27,942.82 = 7,535.16 : x
  2. Step 2: Convert to fraction form
    18,628.62/27,942.82 = 7,535.16/x
  3. Step 3: Cross multiply
    18,628.62x = 27,942.82 × 7,535.16
  4. Step 4: Simplify right side
    18,628.62x = 210,553,619.55
  5. Step 5: Solve for x
    x = 210,553,619.55/18,628.62
  6. Step 6: Final answer
    x = 11,302.70

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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.