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Finding the Fourth Proportional to 12,615,179,927.70, 18,922,769,891.55 and 12,615,179,927.70

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Solution

The fourth proportional to 12,615,179,927.70, 18,922,769,891.55 and 12,615,179,927.70 is: 18,922,769,891.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615,179,927.70 : 18,922,769,891.55 = 12,615,179,927.70 : x
  2. Step 2: Convert to fraction form
    12,615,179,927.70/18,922,769,891.55 = 12,615,179,927.70/x
  3. Step 3: Cross multiply
    12,615,179,927.70x = 18,922,769,891.55 × 12,615,179,927.70
  4. Step 4: Simplify right side
    12,615,179,927.70x = 238,714,146,912,367,476,736
  5. Step 5: Solve for x
    x = 238,714,146,912,367,476,736/12,615,179,927.70
  6. Step 6: Final answer
    x = 18,922,769,891.55

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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.