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Finding the Fourth Proportional to 19,195.92, 28,771.92 and 8,085.96

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Solution

The fourth proportional to 19,195.92, 28,771.92 and 8,085.96 is: 12,119.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,195.92 : 28,771.92 = 8,085.96 : x
  2. Step 2: Convert to fraction form
    19,195.92/28,771.92 = 8,085.96/x
  3. Step 3: Cross multiply
    19,195.92x = 28,771.92 × 8,085.96
  4. Step 4: Simplify right side
    19,195.92x = 232,648,594.24
  5. Step 5: Solve for x
    x = 232,648,594.24/19,195.92
  6. Step 6: Final answer
    x = 12,119.69

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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.