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Finding the Fourth Proportional to 5,979,863.80, 8,969,795.70 and 4,987,840.60

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Solution

The fourth proportional to 5,979,863.80, 8,969,795.70 and 4,987,840.60 is: 7,481,760.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,979,863.80 : 8,969,795.70 = 4,987,840.60 : x
  2. Step 2: Convert to fraction form
    5,979,863.80/8,969,795.70 = 4,987,840.60/x
  3. Step 3: Cross multiply
    5,979,863.80x = 8,969,795.70 × 4,987,840.60
  4. Step 4: Simplify right side
    5,979,863.80x = 44,739,911,166,165.41
  5. Step 5: Solve for x
    x = 44,739,911,166,165.41/5,979,863.80
  6. Step 6: Final answer
    x = 7,481,760.90

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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.