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Finding the Fourth Proportional to 19,039.78, 28,566.44 and 8,508.84

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Solution

The fourth proportional to 19,039.78, 28,566.44 and 8,508.84 is: 12,766.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,039.78 : 28,566.44 = 8,508.84 : x
  2. Step 2: Convert to fraction form
    19,039.78/28,566.44 = 8,508.84/x
  3. Step 3: Cross multiply
    19,039.78x = 28,566.44 × 8,508.84
  4. Step 4: Simplify right side
    19,039.78x = 243,067,267.33
  5. Step 5: Solve for x
    x = 243,067,267.33/19,039.78
  6. Step 6: Final answer
    x = 12,766.29

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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.