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Finding the Fourth Proportional to 3,969,659.78, 5,954,844.86 and 1,540,756.08

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Solution

The fourth proportional to 3,969,659.78, 5,954,844.86 and 1,540,756.08 is: 2,311,271.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969,659.78 : 5,954,844.86 = 1,540,756.08 : x
  2. Step 2: Convert to fraction form
    3,969,659.78/5,954,844.86 = 1,540,756.08/x
  3. Step 3: Cross multiply
    3,969,659.78x = 5,954,844.86 × 1,540,756.08
  4. Step 4: Simplify right side
    3,969,659.78x = 9,174,963,415,797.97
  5. Step 5: Solve for x
    x = 9,174,963,415,797.97/3,969,659.78
  6. Step 6: Final answer
    x = 2,311,271.98

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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.