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Finding the Fourth Proportional to 783,072.90, 1,093,940.10 and 783,072.90

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Solution

The fourth proportional to 783,072.90, 1,093,940.10 and 783,072.90 is: 1,093,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,072.90 : 1,093,940.10 = 783,072.90 : x
  2. Step 2: Convert to fraction form
    783,072.90/1,093,940.10 = 783,072.90/x
  3. Step 3: Cross multiply
    783,072.90x = 1,093,940.10 × 783,072.90
  4. Step 4: Simplify right side
    783,072.90x = 856,634,846,533.29
  5. Step 5: Solve for x
    x = 856,634,846,533.29/783,072.90
  6. Step 6: Final answer
    x = 1,093,940.10

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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.