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Finding the Third Proportional to 3,905,493,505 and 8,557,121,415

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Solution

The third proportional to 3,905,493,505 and 8,557,121,415 is: 18,749,058,682.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905,493,505 : 8,557,121,415 = 8,557,121,415 : x
  2. Step 2: Convert to fraction form
    3,905,493,505/8,557,121,415 = 8,557,121,415/x
  3. Step 3: Cross multiply
    3,905,493,505x = 8,557,121,415 × 8,557,121,415
  4. Step 4: Simplify right side
    3,905,493,505x = 73,224,326,911,051,603,968
  5. Step 5: Solve for x
    x = 73,224,326,911,051,603,968/3,905,493,505
  6. Step 6: Final answer
    x = 18,749,058,682.93

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.