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Finding the Fourth Proportional to 228,940.20, 343,408.68 and 71,168.40

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Solution

The fourth proportional to 228,940.20, 343,408.68 and 71,168.40 is: 106,752.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,940.20 : 343,408.68 = 71,168.40 : x
  2. Step 2: Convert to fraction form
    228,940.20/343,408.68 = 71,168.40/x
  3. Step 3: Cross multiply
    228,940.20x = 343,408.68 × 71,168.40
  4. Step 4: Simplify right side
    228,940.20x = 24,439,846,301.71
  5. Step 5: Solve for x
    x = 24,439,846,301.71/228,940.20
  6. Step 6: Final answer
    x = 106,752.10

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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.