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Finding the Fourth Proportional to 531,611.06, 733,640.98 and 289,906.86

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Solution

The fourth proportional to 531,611.06, 733,640.98 and 289,906.86 is: 400,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,611.06 : 733,640.98 = 289,906.86 : x
  2. Step 2: Convert to fraction form
    531,611.06/733,640.98 = 289,906.86/x
  3. Step 3: Cross multiply
    531,611.06x = 733,640.98 × 289,906.86
  4. Step 4: Simplify right side
    531,611.06x = 212,687,552,879.12
  5. Step 5: Solve for x
    x = 212,687,552,879.12/531,611.06
  6. Step 6: Final answer
    x = 400,081.13

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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.