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Finding the Fourth Proportional to 547,059.17, 754,910.94 and 305,357.33

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Solution

The fourth proportional to 547,059.17, 754,910.94 and 305,357.33 is: 421,375.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,059.17 : 754,910.94 = 305,357.33 : x
  2. Step 2: Convert to fraction form
    547,059.17/754,910.94 = 305,357.33/x
  3. Step 3: Cross multiply
    547,059.17x = 754,910.94 × 305,357.33
  4. Step 4: Simplify right side
    547,059.17x = 230,517,585,251.64
  5. Step 5: Solve for x
    x = 230,517,585,251.64/547,059.17
  6. Step 6: Final answer
    x = 421,375.97

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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.