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Finding the Fourth Proportional to 91,199.80, 125,843.52 and 50,907.70

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Solution

The fourth proportional to 91,199.80, 125,843.52 and 50,907.70 is: 70,245.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,199.80 : 125,843.52 = 50,907.70 : x
  2. Step 2: Convert to fraction form
    91,199.80/125,843.52 = 50,907.70/x
  3. Step 3: Cross multiply
    91,199.80x = 125,843.52 × 50,907.70
  4. Step 4: Simplify right side
    91,199.80x = 6,406,404,163.10
  5. Step 5: Solve for x
    x = 6,406,404,163.10/91,199.80
  6. Step 6: Final answer
    x = 70,245.81

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1.5x scale

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.