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Finding the Fourth Proportional to 7,959,767.74, 11,938,485.13 and 3,915,169.90

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Solution

The fourth proportional to 7,959,767.74, 11,938,485.13 and 3,915,169.90 is: 5,872,181.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959,767.74 : 11,938,485.13 = 3,915,169.90 : x
  2. Step 2: Convert to fraction form
    7,959,767.74/11,938,485.13 = 3,915,169.90/x
  3. Step 3: Cross multiply
    7,959,767.74x = 11,938,485.13 × 3,915,169.90
  4. Step 4: Simplify right side
    7,959,767.74x = 46,741,197,632,573.59
  5. Step 5: Solve for x
    x = 46,741,197,632,573.59/7,959,767.74
  6. Step 6: Final answer
    x = 5,872,181.09

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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.