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Finding the Fourth Proportional to 19,098.62, 28,636.34 and 8,566.66

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Solution

The fourth proportional to 19,098.62, 28,636.34 and 8,566.66 is: 12,844.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,098.62 : 28,636.34 = 8,566.66 : x
  2. Step 2: Convert to fraction form
    19,098.62/28,636.34 = 8,566.66/x
  3. Step 3: Cross multiply
    19,098.62x = 28,636.34 × 8,566.66
  4. Step 4: Simplify right side
    19,098.62x = 245,317,788.42
  5. Step 5: Solve for x
    x = 245,317,788.42/19,098.62
  6. Step 6: Final answer
    x = 12,844.79

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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.