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Finding the Fourth Proportional to 70,682,647.40, 105,874,671.90 and 58,738,711.40

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Solution

The fourth proportional to 70,682,647.40, 105,874,671.90 and 58,738,711.40 is: 87,983,996.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,682,647.40 : 105,874,671.90 = 58,738,711.40 : x
  2. Step 2: Convert to fraction form
    70,682,647.40/105,874,671.90 = 58,738,711.40/x
  3. Step 3: Cross multiply
    70,682,647.40x = 105,874,671.90 × 58,738,711.40
  4. Step 4: Simplify right side
    70,682,647.40x = 6,218,941,797,303,790
  5. Step 5: Solve for x
    x = 6,218,941,797,303,790/70,682,647.40
  6. Step 6: Final answer
    x = 87,983,996.44

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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.