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Finding the Fourth Proportional to 404,809.79, 558,684.88 and 336,706.61

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Solution

The fourth proportional to 404,809.79, 558,684.88 and 336,706.61 is: 464,694.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,809.79 : 558,684.88 = 336,706.61 : x
  2. Step 2: Convert to fraction form
    404,809.79/558,684.88 = 336,706.61/x
  3. Step 3: Cross multiply
    404,809.79x = 558,684.88 × 336,706.61
  4. Step 4: Simplify right side
    404,809.79x = 188,112,888,367.87
  5. Step 5: Solve for x
    x = 188,112,888,367.87/404,809.79
  6. Step 6: Final answer
    x = 464,694.52

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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.