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Finding the Fourth Proportional to 5,979,372.80, 8,969,059.20 and 3,291,987.20

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Solution

The fourth proportional to 5,979,372.80, 8,969,059.20 and 3,291,987.20 is: 4,937,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,979,372.80 : 8,969,059.20 = 3,291,987.20 : x
  2. Step 2: Convert to fraction form
    5,979,372.80/8,969,059.20 = 3,291,987.20/x
  3. Step 3: Cross multiply
    5,979,372.80x = 8,969,059.20 × 3,291,987.20
  4. Step 4: Simplify right side
    5,979,372.80x = 29,526,028,082,442.24
  5. Step 5: Solve for x
    x = 29,526,028,082,442.24/5,979,372.80
  6. Step 6: Final answer
    x = 4,937,980.80

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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.