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Finding the Fourth Proportional to 3,969,679.96, 5,952,122.56 and 1,780,848.80

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Solution

The fourth proportional to 3,969,679.96, 5,952,122.56 and 1,780,848.80 is: 2,670,197.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969,679.96 : 5,952,122.56 = 1,780,848.80 : x
  2. Step 2: Convert to fraction form
    3,969,679.96/5,952,122.56 = 1,780,848.80/x
  3. Step 3: Cross multiply
    3,969,679.96x = 5,952,122.56 × 1,780,848.80
  4. Step 4: Simplify right side
    3,969,679.96x = 10,599,830,328,857.11
  5. Step 5: Solve for x
    x = 10,599,830,328,857.11/3,969,679.96
  6. Step 6: Final answer
    x = 2,670,197.71

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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.