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Finding the Fourth Proportional to 691,703.89, 954,388.83 and 419,765.63

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Solution

The fourth proportional to 691,703.89, 954,388.83 and 419,765.63 is: 579,177.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,703.89 : 954,388.83 = 419,765.63 : x
  2. Step 2: Convert to fraction form
    691,703.89/954,388.83 = 419,765.63/x
  3. Step 3: Cross multiply
    691,703.89x = 954,388.83 × 419,765.63
  4. Step 4: Simplify right side
    691,703.89x = 400,619,622,930.91
  5. Step 5: Solve for x
    x = 400,619,622,930.91/691,703.89
  6. Step 6: Final answer
    x = 579,177.93

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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.