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Finding the Fourth Proportional to 493,290, 680,745.06 and 266,940.36

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Solution

The fourth proportional to 493,290, 680,745.06 and 266,940.36 is: 368,380.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,290 : 680,745.06 = 266,940.36 : x
  2. Step 2: Convert to fraction form
    493,290/680,745.06 = 266,940.36/x
  3. Step 3: Cross multiply
    493,290x = 680,745.06 × 266,940.36
  4. Step 4: Simplify right side
    493,290x = 181,718,331,384.62
  5. Step 5: Solve for x
    x = 181,718,331,384.62/493,290
  6. Step 6: Final answer
    x = 368,380.33

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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.