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Finding the Fourth Proportional to 1,888,163.58, 2,605,695.65 and 1,028,723.61

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Solution

The fourth proportional to 1,888,163.58, 2,605,695.65 and 1,028,723.61 is: 1,419,654.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888,163.58 : 2,605,695.65 = 1,028,723.61 : x
  2. Step 2: Convert to fraction form
    1,888,163.58/2,605,695.65 = 1,028,723.61/x
  3. Step 3: Cross multiply
    1,888,163.58x = 2,605,695.65 × 1,028,723.61
  4. Step 4: Simplify right side
    1,888,163.58x = 2,680,540,635,629.30
  5. Step 5: Solve for x
    x = 2,680,540,635,629.30/1,888,163.58
  6. Step 6: Final answer
    x = 1,419,654.88

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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.