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Finding the Fourth Proportional to 70,682,512.40, 105,874,469.40 and 58,738,576.40

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Solution

The fourth proportional to 70,682,512.40, 105,874,469.40 and 58,738,576.40 is: 87,983,793.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,682,512.40 : 105,874,469.40 = 58,738,576.40 : x
  2. Step 2: Convert to fraction form
    70,682,512.40/105,874,469.40 = 58,738,576.40/x
  3. Step 3: Cross multiply
    70,682,512.40x = 105,874,469.40 × 58,738,576.40
  4. Step 4: Simplify right side
    70,682,512.40x = 6,218,915,609,661,362
  5. Step 5: Solve for x
    x = 6,218,915,609,661,362/70,682,512.40
  6. Step 6: Final answer
    x = 87,983,793.99

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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.