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Finding the Fourth Proportional to 1,764,751.36, 2,647,422.24 and 1,385,656.78

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Solution

The fourth proportional to 1,764,751.36, 2,647,422.24 and 1,385,656.78 is: 2,078,716.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764,751.36 : 2,647,422.24 = 1,385,656.78 : x
  2. Step 2: Convert to fraction form
    1,764,751.36/2,647,422.24 = 1,385,656.78/x
  3. Step 3: Cross multiply
    1,764,751.36x = 2,647,422.24 × 1,385,656.78
  4. Step 4: Simplify right side
    1,764,751.36x = 3,668,418,576,378.79
  5. Step 5: Solve for x
    x = 3,668,418,576,378.79/1,764,751.36
  6. Step 6: Final answer
    x = 2,078,716.96

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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.