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Finding the Fourth Proportional to 228,906.60, 343,392.30 and 71,118.60

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Solution

The fourth proportional to 228,906.60, 343,392.30 and 71,118.60 is: 106,687.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,906.60 : 343,392.30 = 71,118.60 : x
  2. Step 2: Convert to fraction form
    228,906.60/343,392.30 = 71,118.60/x
  3. Step 3: Cross multiply
    228,906.60x = 343,392.30 × 71,118.60
  4. Step 4: Simplify right side
    228,906.60x = 24,421,579,626.78
  5. Step 5: Solve for x
    x = 24,421,579,626.78/228,906.60
  6. Step 6: Final answer
    x = 106,687.97

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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.