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Finding the Fourth Proportional to 70,980,103.20, 106,469,809.20 and 27,818,810.40

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Solution

The fourth proportional to 70,980,103.20, 106,469,809.20 and 27,818,810.40 is: 41,728,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,980,103.20 : 106,469,809.20 = 27,818,810.40 : x
  2. Step 2: Convert to fraction form
    70,980,103.20/106,469,809.20 = 27,818,810.40/x
  3. Step 3: Cross multiply
    70,980,103.20x = 106,469,809.20 × 27,818,810.40
  4. Step 4: Simplify right side
    70,980,103.20x = 2,961,863,435,458,975.50
  5. Step 5: Solve for x
    x = 2,961,863,435,458,975.50/70,980,103.20
  6. Step 6: Final answer
    x = 41,728,080.15

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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.