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Finding the Fourth Proportional to 3,974,540.40, 5,961,810.60 and 982,724.40

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Solution

The fourth proportional to 3,974,540.40, 5,961,810.60 and 982,724.40 is: 1,474,086.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974,540.40 : 5,961,810.60 = 982,724.40 : x
  2. Step 2: Convert to fraction form
    3,974,540.40/5,961,810.60 = 982,724.40/x
  3. Step 3: Cross multiply
    3,974,540.40x = 5,961,810.60 × 982,724.40
  4. Step 4: Simplify right side
    3,974,540.40x = 5,858,816,744,798.64
  5. Step 5: Solve for x
    x = 5,858,816,744,798.64/3,974,540.40
  6. Step 6: Final answer
    x = 1,474,086.60

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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.