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Finding the Fourth Proportional to 338,686, 467,402.88 and 187,783

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Solution

The fourth proportional to 338,686, 467,402.88 and 187,783 is: 259,149.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,686 : 467,402.88 = 187,783 : x
  2. Step 2: Convert to fraction form
    338,686/467,402.88 = 187,783/x
  3. Step 3: Cross multiply
    338,686x = 467,402.88 × 187,783
  4. Step 4: Simplify right side
    338,686x = 87,770,315,015.04
  5. Step 5: Solve for x
    x = 87,770,315,015.04/338,686
  6. Step 6: Final answer
    x = 259,149.52

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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.