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Finding the Fourth Proportional to 91,198.10, 125,850.10 and 57,224.88

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Solution

The fourth proportional to 91,198.10, 125,850.10 and 57,224.88 is: 78,968.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,198.10 : 125,850.10 = 57,224.88 : x
  2. Step 2: Convert to fraction form
    91,198.10/125,850.10 = 57,224.88/x
  3. Step 3: Cross multiply
    91,198.10x = 125,850.10 × 57,224.88
  4. Step 4: Simplify right side
    91,198.10x = 7,201,756,870.49
  5. Step 5: Solve for x
    x = 7,201,756,870.49/91,198.10
  6. Step 6: Final answer
    x = 78,968.28

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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.