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Finding the Fourth Proportional to 622,859.62, 859,546.20 and 336,379.66

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Solution

The fourth proportional to 622,859.62, 859,546.20 and 336,379.66 is: 464,203.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,859.62 : 859,546.20 = 336,379.66 : x
  2. Step 2: Convert to fraction form
    622,859.62/859,546.20 = 336,379.66/x
  3. Step 3: Cross multiply
    622,859.62x = 859,546.20 × 336,379.66
  4. Step 4: Simplify right side
    622,859.62x = 289,133,858,510.29
  5. Step 5: Solve for x
    x = 289,133,858,510.29/622,859.62
  6. Step 6: Final answer
    x = 464,203.89

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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.