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Finding the Fourth Proportional to 308,706.86, 426,081.66 and 201,084.86

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Solution

The fourth proportional to 308,706.86, 426,081.66 and 201,084.86 is: 277,540.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,706.86 : 426,081.66 = 201,084.86 : x
  2. Step 2: Convert to fraction form
    308,706.86/426,081.66 = 201,084.86/x
  3. Step 3: Cross multiply
    308,706.86x = 426,081.66 × 201,084.86
  4. Step 4: Simplify right side
    308,706.86x = 85,678,570,949.67
  5. Step 5: Solve for x
    x = 85,678,570,949.67/308,706.86
  6. Step 6: Final answer
    x = 277,540.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.