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Finding the Fourth Proportional to 1,936,093.78, 2,905,463.81 and 673,921.41

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Solution

The fourth proportional to 1,936,093.78, 2,905,463.81 and 673,921.41 is: 1,011,342.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936,093.78 : 2,905,463.81 = 673,921.41 : x
  2. Step 2: Convert to fraction form
    1,936,093.78/2,905,463.81 = 673,921.41/x
  3. Step 3: Cross multiply
    1,936,093.78x = 2,905,463.81 × 673,921.41
  4. Step 4: Simplify right side
    1,936,093.78x = 1,958,054,267,539.17
  5. Step 5: Solve for x
    x = 1,958,054,267,539.17/1,936,093.78
  6. Step 6: Final answer
    x = 1,011,342.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.