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Finding the Fourth Proportional to 91,794.80, 137,692.20 and 68,466.80

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Solution

The fourth proportional to 91,794.80, 137,692.20 and 68,466.80 is: 102,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,794.80 : 137,692.20 = 68,466.80 : x
  2. Step 2: Convert to fraction form
    91,794.80/137,692.20 = 68,466.80/x
  3. Step 3: Cross multiply
    91,794.80x = 137,692.20 × 68,466.80
  4. Step 4: Simplify right side
    91,794.80x = 9,427,344,318.96
  5. Step 5: Solve for x
    x = 9,427,344,318.96/91,794.80
  6. Step 6: Final answer
    x = 102,700.20

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1.5x scale

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.