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Finding the Fourth Proportional to 19,078.24, 28,616.94 and 5,227.24

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Solution

The fourth proportional to 19,078.24, 28,616.94 and 5,227.24 is: 7,840.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,078.24 : 28,616.94 = 5,227.24 : x
  2. Step 2: Convert to fraction form
    19,078.24/28,616.94 = 5,227.24/x
  3. Step 3: Cross multiply
    19,078.24x = 28,616.94 × 5,227.24
  4. Step 4: Simplify right side
    19,078.24x = 149,587,613.45
  5. Step 5: Solve for x
    x = 149,587,613.45/19,078.24
  6. Step 6: Final answer
    x = 7,840.74

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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.