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Finding the Fourth Proportional to 995,328,513.20, 1,394,893,190.80 and 995,328,513.20

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Solution

The fourth proportional to 995,328,513.20, 1,394,893,190.80 and 995,328,513.20 is: 1,394,893,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    995,328,513.20 : 1,394,893,190.80 = 995,328,513.20 : x
  2. Step 2: Convert to fraction form
    995,328,513.20/1,394,893,190.80 = 995,328,513.20/x
  3. Step 3: Cross multiply
    995,328,513.20x = 1,394,893,190.80 × 995,328,513.20
  4. Step 4: Simplify right side
    995,328,513.20x = 1,388,376,965,671,768,064
  5. Step 5: Solve for x
    x = 1,388,376,965,671,768,064/995,328,513.20
  6. Step 6: Final answer
    x = 1,394,893,190.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.