Home / 12,253,220,998.20-18,379,831,497.30-10,509,828,797.70

Finding the Fourth Proportional to 12,253,220,998.20, 18,379,831,497.30 and 10,509,828,797.70

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Solution

The fourth proportional to 12,253,220,998.20, 18,379,831,497.30 and 10,509,828,797.70 is: 15,764,743,196.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,253,220,998.20 : 18,379,831,497.30 = 10,509,828,797.70 : x
  2. Step 2: Convert to fraction form
    12,253,220,998.20/18,379,831,497.30 = 10,509,828,797.70/x
  3. Step 3: Cross multiply
    12,253,220,998.20x = 18,379,831,497.30 × 10,509,828,797.70
  4. Step 4: Simplify right side
    12,253,220,998.20x = 193,168,882,367,197,052,928
  5. Step 5: Solve for x
    x = 193,168,882,367,197,052,928/12,253,220,998.20
  6. Step 6: Final answer
    x = 15,764,743,196.55

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Double scale
Find fourth proportional to 12,253,220,999.20, 18,379,831,498.80 and 10,509,828,798.70
Similar ratio
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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.