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Finding the Fourth Proportional to 91,075.54, 125,684.91 and 50,791.90

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Solution

The fourth proportional to 91,075.54, 125,684.91 and 50,791.90 is: 70,093.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,075.54 : 125,684.91 = 50,791.90 : x
  2. Step 2: Convert to fraction form
    91,075.54/125,684.91 = 50,791.90/x
  3. Step 3: Cross multiply
    91,075.54x = 125,684.91 × 50,791.90
  4. Step 4: Simplify right side
    91,075.54x = 6,383,775,380.23
  5. Step 5: Solve for x
    x = 6,383,775,380.23/91,075.54
  6. Step 6: Final answer
    x = 70,093.19

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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.