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Finding the Fourth Proportional to 10,961,825.70, 16,419,118.95 and 9,072,257.70

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Solution

The fourth proportional to 10,961,825.70, 16,419,118.95 and 9,072,257.70 is: 13,588,838.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961,825.70 : 16,419,118.95 = 9,072,257.70 : x
  2. Step 2: Convert to fraction form
    10,961,825.70/16,419,118.95 = 9,072,257.70/x
  3. Step 3: Cross multiply
    10,961,825.70x = 16,419,118.95 × 9,072,257.70
  4. Step 4: Simplify right side
    10,961,825.70x = 148,958,478,321,353.41
  5. Step 5: Solve for x
    x = 148,958,478,321,353.41/10,961,825.70
  6. Step 6: Final answer
    x = 13,588,838.43

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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.