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Finding the Fourth Proportional to 12,469,717.20, 18,704,575.80 and 12,096,469.20

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Solution

The fourth proportional to 12,469,717.20, 18,704,575.80 and 12,096,469.20 is: 18,144,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,469,717.20 : 18,704,575.80 = 12,096,469.20 : x
  2. Step 2: Convert to fraction form
    12,469,717.20/18,704,575.80 = 12,096,469.20/x
  3. Step 3: Cross multiply
    12,469,717.20x = 18,704,575.80 × 12,096,469.20
  4. Step 4: Simplify right side
    12,469,717.20x = 226,259,325,063,765.34
  5. Step 5: Solve for x
    x = 226,259,325,063,765.34/12,469,717.20
  6. Step 6: Final answer
    x = 18,144,703.80

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1.5x scale

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.