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Finding the Fourth Proportional to 16,798,640.80, 25,197,961.20 and 13,439,408.80

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Solution

The fourth proportional to 16,798,640.80, 25,197,961.20 and 13,439,408.80 is: 20,159,113.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,798,640.80 : 25,197,961.20 = 13,439,408.80 : x
  2. Step 2: Convert to fraction form
    16,798,640.80/25,197,961.20 = 13,439,408.80/x
  3. Step 3: Cross multiply
    16,798,640.80x = 25,197,961.20 × 13,439,408.80
  4. Step 4: Simplify right side
    16,798,640.80x = 338,645,701,493,338.56
  5. Step 5: Solve for x
    x = 338,645,701,493,338.56/16,798,640.80
  6. Step 6: Final answer
    x = 20,159,113.20

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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.