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Finding the Fourth Proportional to 19,081.52, 28,627.88 and 8,549.20

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Solution

The fourth proportional to 19,081.52, 28,627.88 and 8,549.20 is: 12,826.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,081.52 : 28,627.88 = 8,549.20 : x
  2. Step 2: Convert to fraction form
    19,081.52/28,627.88 = 8,549.20/x
  3. Step 3: Cross multiply
    19,081.52x = 28,627.88 × 8,549.20
  4. Step 4: Simplify right side
    19,081.52x = 244,745,351.79
  5. Step 5: Solve for x
    x = 244,745,351.79/19,081.52
  6. Step 6: Final answer
    x = 12,826.30

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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.