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Finding the Fourth Proportional to 1,809,965.88, 2,497,757.94 and 1,005,149.88

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Solution

The fourth proportional to 1,809,965.88, 2,497,757.94 and 1,005,149.88 is: 1,387,109.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809,965.88 : 2,497,757.94 = 1,005,149.88 : x
  2. Step 2: Convert to fraction form
    1,809,965.88/2,497,757.94 = 1,005,149.88/x
  3. Step 3: Cross multiply
    1,809,965.88x = 2,497,757.94 × 1,005,149.88
  4. Step 4: Simplify right side
    1,809,965.88x = 2,510,621,093,660.05
  5. Step 5: Solve for x
    x = 2,510,621,093,660.05/1,809,965.88
  6. Step 6: Final answer
    x = 1,387,109.63

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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.