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Finding the Fourth Proportional to 6,656,992.20, 9,985,488.30 and 3,297,760.20

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Solution

The fourth proportional to 6,656,992.20, 9,985,488.30 and 3,297,760.20 is: 4,946,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,656,992.20 : 9,985,488.30 = 3,297,760.20 : x
  2. Step 2: Convert to fraction form
    6,656,992.20/9,985,488.30 = 3,297,760.20/x
  3. Step 3: Cross multiply
    6,656,992.20x = 9,985,488.30 × 3,297,760.20
  4. Step 4: Simplify right side
    6,656,992.20x = 32,929,745,893,305.66
  5. Step 5: Solve for x
    x = 32,929,745,893,305.66/6,656,992.20
  6. Step 6: Final answer
    x = 4,946,640.30

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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.