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Finding the Fourth Proportional to 492,291, 679,361.58 and 265,936.50

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Solution

The fourth proportional to 492,291, 679,361.58 and 265,936.50 is: 366,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,291 : 679,361.58 = 265,936.50 : x
  2. Step 2: Convert to fraction form
    492,291/679,361.58 = 265,936.50/x
  3. Step 3: Cross multiply
    492,291x = 679,361.58 × 265,936.50
  4. Step 4: Simplify right side
    492,291x = 180,667,040,819.67
  5. Step 5: Solve for x
    x = 180,667,040,819.67/492,291
  6. Step 6: Final answer
    x = 366,992.37

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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.