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Finding the Fourth Proportional to 531,640.56, 733,661.82 and 289,922.52

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Solution

The fourth proportional to 531,640.56, 733,661.82 and 289,922.52 is: 400,091.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,640.56 : 733,661.82 = 289,922.52 : x
  2. Step 2: Convert to fraction form
    531,640.56/733,661.82 = 289,922.52/x
  3. Step 3: Cross multiply
    531,640.56x = 733,661.82 × 289,922.52
  4. Step 4: Simplify right side
    531,640.56x = 212,705,083,682.19
  5. Step 5: Solve for x
    x = 212,705,083,682.19/531,640.56
  6. Step 6: Final answer
    x = 400,091.90

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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.