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Finding the Fourth Proportional to 45,515,857.90, 68,273,786.85 and 45,515,857.90

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Solution

The fourth proportional to 45,515,857.90, 68,273,786.85 and 45,515,857.90 is: 68,273,786.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,515,857.90 : 68,273,786.85 = 45,515,857.90 : x
  2. Step 2: Convert to fraction form
    45,515,857.90/68,273,786.85 = 45,515,857.90/x
  3. Step 3: Cross multiply
    45,515,857.90x = 68,273,786.85 × 45,515,857.90
  4. Step 4: Simplify right side
    45,515,857.90x = 3,107,539,980,559,488
  5. Step 5: Solve for x
    x = 3,107,539,980,559,488/45,515,857.90
  6. Step 6: Final answer
    x = 68,273,786.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.