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Finding the Fourth Proportional to 622,812.38, 859,481.09 and 336,332.46

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Solution

The fourth proportional to 622,812.38, 859,481.09 and 336,332.46 is: 464,138.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,812.38 : 859,481.09 = 336,332.46 : x
  2. Step 2: Convert to fraction form
    622,812.38/859,481.09 = 336,332.46/x
  3. Step 3: Cross multiply
    622,812.38x = 859,481.09 × 336,332.46
  4. Step 4: Simplify right side
    622,812.38x = 289,071,392,125.82
  5. Step 5: Solve for x
    x = 289,071,392,125.82/622,812.38
  6. Step 6: Final answer
    x = 464,138.81

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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.