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Finding the Fourth Proportional to 228,620.91, 343,144.15 and 116,385.15

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Solution

The fourth proportional to 228,620.91, 343,144.15 and 116,385.15 is: 174,686.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,620.91 : 343,144.15 = 116,385.15 : x
  2. Step 2: Convert to fraction form
    228,620.91/343,144.15 = 116,385.15/x
  3. Step 3: Cross multiply
    228,620.91x = 343,144.15 × 116,385.15
  4. Step 4: Simplify right side
    228,620.91x = 39,936,882,787.45
  5. Step 5: Solve for x
    x = 39,936,882,787.45/228,620.91
  6. Step 6: Final answer
    x = 174,686.05

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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.