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Finding the Fourth Proportional to 19,111.62, 28,672.92 and 8,019.84

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Solution

The fourth proportional to 19,111.62, 28,672.92 and 8,019.84 is: 12,032.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.62 : 28,672.92 = 8,019.84 : x
  2. Step 2: Convert to fraction form
    19,111.62/28,672.92 = 8,019.84/x
  3. Step 3: Cross multiply
    19,111.62x = 28,672.92 × 8,019.84
  4. Step 4: Simplify right side
    19,111.62x = 229,952,230.73
  5. Step 5: Solve for x
    x = 229,952,230.73/19,111.62
  6. Step 6: Final answer
    x = 12,032.06

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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.