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Finding the Fourth Proportional to 5,978,906.20, 8,968,359.30 and 5,648,231.80

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Solution

The fourth proportional to 5,978,906.20, 8,968,359.30 and 5,648,231.80 is: 8,472,347.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978,906.20 : 8,968,359.30 = 5,648,231.80 : x
  2. Step 2: Convert to fraction form
    5,978,906.20/8,968,359.30 = 5,648,231.80/x
  3. Step 3: Cross multiply
    5,978,906.20x = 8,968,359.30 × 5,648,231.80
  4. Step 4: Simplify right side
    5,978,906.20x = 50,655,372,192,085.74
  5. Step 5: Solve for x
    x = 50,655,372,192,085.74/5,978,906.20
  6. Step 6: Final answer
    x = 8,472,347.70

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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.