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Finding the Fourth Proportional to 13,961,163.60, 20,957,491.80 and 10,780,390.80

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Solution

The fourth proportional to 13,961,163.60, 20,957,491.80 and 10,780,390.80 is: 16,182,745.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961,163.60 : 20,957,491.80 = 10,780,390.80 : x
  2. Step 2: Convert to fraction form
    13,961,163.60/20,957,491.80 = 10,780,390.80/x
  3. Step 3: Cross multiply
    13,961,163.60x = 20,957,491.80 × 10,780,390.80
  4. Step 4: Simplify right side
    13,961,163.60x = 225,929,951,791,795.47
  5. Step 5: Solve for x
    x = 225,929,951,791,795.47/13,961,163.60
  6. Step 6: Final answer
    x = 16,182,745.10

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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.