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Finding the Third Proportional to 1,217,539,431 and 1,882,221,282

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Solution

The third proportional to 1,217,539,431 and 1,882,221,282 is: 2,909,767,736.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,539,431 : 1,882,221,282 = 1,882,221,282 : x
  2. Step 2: Convert to fraction form
    1,217,539,431/1,882,221,282 = 1,882,221,282/x
  3. Step 3: Cross multiply
    1,217,539,431x = 1,882,221,282 × 1,882,221,282
  4. Step 4: Simplify right side
    1,217,539,431x = 3,542,756,954,413,723,648
  5. Step 5: Solve for x
    x = 3,542,756,954,413,723,648/1,217,539,431
  6. Step 6: Final answer
    x = 2,909,767,736.64

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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.