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Finding the Fourth Proportional to 18,723.16, 28,071.72 and 7,033.24

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Solution

The fourth proportional to 18,723.16, 28,071.72 and 7,033.24 is: 10,544.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723.16 : 28,071.72 = 7,033.24 : x
  2. Step 2: Convert to fraction form
    18,723.16/28,071.72 = 7,033.24/x
  3. Step 3: Cross multiply
    18,723.16x = 28,071.72 × 7,033.24
  4. Step 4: Simplify right side
    18,723.16x = 197,435,143.97
  5. Step 5: Solve for x
    x = 197,435,143.97/18,723.16
  6. Step 6: Final answer
    x = 10,544.97

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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.