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Finding the Fourth Proportional to 6,885,813.78, 9,504,980.94 and 5,915,048.22

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Solution

The fourth proportional to 6,885,813.78, 9,504,980.94 and 5,915,048.22 is: 8,164,963.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885,813.78 : 9,504,980.94 = 5,915,048.22 : x
  2. Step 2: Convert to fraction form
    6,885,813.78/9,504,980.94 = 5,915,048.22/x
  3. Step 3: Cross multiply
    6,885,813.78x = 9,504,980.94 × 5,915,048.22
  4. Step 4: Simplify right side
    6,885,813.78x = 56,222,420,590,280.92
  5. Step 5: Solve for x
    x = 56,222,420,590,280.92/6,885,813.78
  6. Step 6: Final answer
    x = 8,164,963.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.