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Finding the Fourth Proportional to 91,835.80, 137,753.70 and 29,512.60

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Solution

The fourth proportional to 91,835.80, 137,753.70 and 29,512.60 is: 44,268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,835.80 : 137,753.70 = 29,512.60 : x
  2. Step 2: Convert to fraction form
    91,835.80/137,753.70 = 29,512.60/x
  3. Step 3: Cross multiply
    91,835.80x = 137,753.70 × 29,512.60
  4. Step 4: Simplify right side
    91,835.80x = 4,065,469,846.62
  5. Step 5: Solve for x
    x = 4,065,469,846.62/91,835.80
  6. Step 6: Final answer
    x = 44,268.90

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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.