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Finding the Fourth Proportional to 10,919,645.20, 16,379,467.80 and 10,683,449.20

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Solution

The fourth proportional to 10,919,645.20, 16,379,467.80 and 10,683,449.20 is: 16,025,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919,645.20 : 16,379,467.80 = 10,683,449.20 : x
  2. Step 2: Convert to fraction form
    10,919,645.20/16,379,467.80 = 10,683,449.20/x
  3. Step 3: Cross multiply
    10,919,645.20x = 16,379,467.80 × 10,683,449.20
  4. Step 4: Simplify right side
    10,919,645.20x = 174,989,212,164,335.75
  5. Step 5: Solve for x
    x = 174,989,212,164,335.75/10,919,645.20
  6. Step 6: Final answer
    x = 16,025,173.80

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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.