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Finding the Third Proportional to 389,575,703,906.72 and 837,781,211,649.60

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Solution

The third proportional to 389,575,703,906.72 and 837,781,211,649.60 is: 1,801,645,614,843.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,575,703,906.72 : 837,781,211,649.60 = 837,781,211,649.60 : x
  2. Step 2: Convert to fraction form
    389,575,703,906.72/837,781,211,649.60 = 837,781,211,649.60/x
  3. Step 3: Cross multiply
    389,575,703,906.72x = 837,781,211,649.60 × 837,781,211,649.60
  4. Step 4: Simplify right side
    389,575,703,906.72x = 701,877,358,593,071,845,998,592
  5. Step 5: Solve for x
    x = 701,877,358,593,071,845,998,592/389,575,703,906.72
  6. Step 6: Final answer
    x = 1,801,645,614,843.40

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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.