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Finding the Third Proportional to 1,218,400,318 and 1,883,491,555

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Solution

The third proportional to 1,218,400,318 and 1,883,491,555 is: 2,911,637,813.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,400,318 : 1,883,491,555 = 1,883,491,555 : x
  2. Step 2: Convert to fraction form
    1,218,400,318/1,883,491,555 = 1,883,491,555/x
  3. Step 3: Cross multiply
    1,218,400,318x = 1,883,491,555 × 1,883,491,555
  4. Step 4: Simplify right side
    1,218,400,318x = 3,547,540,437,756,318,208
  5. Step 5: Solve for x
    x = 3,547,540,437,756,318,208/1,218,400,318
  6. Step 6: Final answer
    x = 2,911,637,813.41

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.