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Finding the Fourth Proportional to 19,396.60, 29,073.30 and 8,301.40

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Solution

The fourth proportional to 19,396.60, 29,073.30 and 8,301.40 is: 12,442.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,396.60 : 29,073.30 = 8,301.40 : x
  2. Step 2: Convert to fraction form
    19,396.60/29,073.30 = 8,301.40/x
  3. Step 3: Cross multiply
    19,396.60x = 29,073.30 × 8,301.40
  4. Step 4: Simplify right side
    19,396.60x = 241,349,092.62
  5. Step 5: Solve for x
    x = 241,349,092.62/19,396.60
  6. Step 6: Final answer
    x = 12,442.86

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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.