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Finding the Fourth Proportional to 622,906.16, 859,636.98 and 347,263.97

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Solution

The fourth proportional to 622,906.16, 859,636.98 and 347,263.97 is: 479,239.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,906.16 : 859,636.98 = 347,263.97 : x
  2. Step 2: Convert to fraction form
    622,906.16/859,636.98 = 347,263.97/x
  3. Step 3: Cross multiply
    622,906.16x = 859,636.98 × 347,263.97
  4. Step 4: Simplify right side
    622,906.16x = 298,520,946,135.43
  5. Step 5: Solve for x
    x = 298,520,946,135.43/622,906.16
  6. Step 6: Final answer
    x = 479,239.04

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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.