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Finding the Third Proportional to 2,643,912,429 and 3,999,872,977.50

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Solution

The third proportional to 2,643,912,429 and 3,999,872,977.50 is: 6,051,253,309.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643,912,429 : 3,999,872,977.50 = 3,999,872,977.50 : x
  2. Step 2: Convert to fraction form
    2,643,912,429/3,999,872,977.50 = 3,999,872,977.50/x
  3. Step 3: Cross multiply
    2,643,912,429x = 3,999,872,977.50 × 3,999,872,977.50
  4. Step 4: Simplify right side
    2,643,912,429x = 15,998,983,836,134,715,392
  5. Step 5: Solve for x
    x = 15,998,983,836,134,715,392/2,643,912,429
  6. Step 6: Final answer
    x = 6,051,253,309.55

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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.