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Finding the Fourth Proportional to 680,093.14, 938,513.37 and 393,607.48

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Solution

The fourth proportional to 680,093.14, 938,513.37 and 393,607.48 is: 543,169.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,093.14 : 938,513.37 = 393,607.48 : x
  2. Step 2: Convert to fraction form
    680,093.14/938,513.37 = 393,607.48/x
  3. Step 3: Cross multiply
    680,093.14x = 938,513.37 × 393,607.48
  4. Step 4: Simplify right side
    680,093.14x = 369,405,882,512.01
  5. Step 5: Solve for x
    x = 369,405,882,512.01/680,093.14
  6. Step 6: Final answer
    x = 543,169.55

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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.