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Finding the Third Proportional to 1,321,956,217 and 1,999,936,492

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Solution

The third proportional to 1,321,956,217 and 1,999,936,492 is: 3,025,626,658.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,956,217 : 1,999,936,492 = 1,999,936,492 : x
  2. Step 2: Convert to fraction form
    1,321,956,217/1,999,936,492 = 1,999,936,492/x
  3. Step 3: Cross multiply
    1,321,956,217x = 1,999,936,492 × 1,999,936,492
  4. Step 4: Simplify right side
    1,321,956,217x = 3,999,745,972,033,266,176
  5. Step 5: Solve for x
    x = 3,999,745,972,033,266,176/1,321,956,217
  6. Step 6: Final answer
    x = 3,025,626,658.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.