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Finding the Fourth Proportional to 626,085.36, 863,997.93 and 354,147.48

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Solution

The fourth proportional to 626,085.36, 863,997.93 and 354,147.48 is: 488,723.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,085.36 : 863,997.93 = 354,147.48 : x
  2. Step 2: Convert to fraction form
    626,085.36/863,997.93 = 354,147.48/x
  3. Step 3: Cross multiply
    626,085.36x = 863,997.93 × 354,147.48
  4. Step 4: Simplify right side
    626,085.36x = 305,982,689,634.72
  5. Step 5: Solve for x
    x = 305,982,689,634.72/626,085.36
  6. Step 6: Final answer
    x = 488,723.60

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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.