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Finding the Fourth Proportional to 625,917.44, 863,802.60 and 354,009.44

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Solution

The fourth proportional to 625,917.44, 863,802.60 and 354,009.44 is: 488,553.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,917.44 : 863,802.60 = 354,009.44 : x
  2. Step 2: Convert to fraction form
    625,917.44/863,802.60 = 354,009.44/x
  3. Step 3: Cross multiply
    625,917.44x = 863,802.60 × 354,009.44
  4. Step 4: Simplify right side
    625,917.44x = 305,794,274,696.54
  5. Step 5: Solve for x
    x = 305,794,274,696.54/625,917.44
  6. Step 6: Final answer
    x = 488,553.69

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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.