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Finding the Fourth Proportional to 1,352,878.72, 1,866,993 and 741,087.88

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Solution

The fourth proportional to 1,352,878.72, 1,866,993 and 741,087.88 is: 1,022,712.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352,878.72 : 1,866,993 = 741,087.88 : x
  2. Step 2: Convert to fraction form
    1,352,878.72/1,866,993 = 741,087.88/x
  3. Step 3: Cross multiply
    1,352,878.72x = 1,866,993 × 741,087.88
  4. Step 4: Simplify right side
    1,352,878.72x = 1,383,605,884,344.84
  5. Step 5: Solve for x
    x = 1,383,605,884,344.84/1,352,878.72
  6. Step 6: Final answer
    x = 1,022,712.43

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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.