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Finding the Fourth Proportional to 99,649,915.20, 149,474,872.80 and 27,846,331.20

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Solution

The fourth proportional to 99,649,915.20, 149,474,872.80 and 27,846,331.20 is: 41,769,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,649,915.20 : 149,474,872.80 = 27,846,331.20 : x
  2. Step 2: Convert to fraction form
    99,649,915.20/149,474,872.80 = 27,846,331.20/x
  3. Step 3: Cross multiply
    99,649,915.20x = 149,474,872.80 × 27,846,331.20
  4. Step 4: Simplify right side
    99,649,915.20x = 4,162,326,814,066,671.50
  5. Step 5: Solve for x
    x = 4,162,326,814,066,671.50/99,649,915.20
  6. Step 6: Final answer
    x = 41,769,496.80

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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.