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Finding the Third Proportional to 129,858,567,987 and 279,260,403,919.50

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Solution

The third proportional to 129,858,567,987 and 279,260,403,919.50 is: 600,548,538,353.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,858,567,987 : 279,260,403,919.50 = 279,260,403,919.50 : x
  2. Step 2: Convert to fraction form
    129,858,567,987/279,260,403,919.50 = 279,260,403,919.50/x
  3. Step 3: Cross multiply
    129,858,567,987x = 279,260,403,919.50 × 279,260,403,919.50
  4. Step 4: Simplify right side
    129,858,567,987x = 77,986,373,197,282,284,666,880
  5. Step 5: Solve for x
    x = 77,986,373,197,282,284,666,880/129,858,567,987
  6. Step 6: Final answer
    x = 600,548,538,353.58

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.