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Finding the Fourth Proportional to 682,342.88, 941,328.81 and 395,696.97

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Solution

The fourth proportional to 682,342.88, 941,328.81 and 395,696.97 is: 545,885.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,342.88 : 941,328.81 = 395,696.97 : x
  2. Step 2: Convert to fraction form
    682,342.88/941,328.81 = 395,696.97/x
  3. Step 3: Cross multiply
    682,342.88x = 941,328.81 × 395,696.97
  4. Step 4: Simplify right side
    682,342.88x = 372,480,957,890.71
  5. Step 5: Solve for x
    x = 372,480,957,890.71/682,342.88
  6. Step 6: Final answer
    x = 545,885.32

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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.