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Finding the Fourth Proportional to 91,137.80, 125,583.54 and 67,226.60

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Solution

The fourth proportional to 91,137.80, 125,583.54 and 67,226.60 is: 92,635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,137.80 : 125,583.54 = 67,226.60 : x
  2. Step 2: Convert to fraction form
    91,137.80/125,583.54 = 67,226.60/x
  3. Step 3: Cross multiply
    91,137.80x = 125,583.54 × 67,226.60
  4. Step 4: Simplify right side
    91,137.80x = 8,442,554,410.16
  5. Step 5: Solve for x
    x = 8,442,554,410.16/91,137.80
  6. Step 6: Final answer
    x = 92,635.05

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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.