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Finding the Fourth Proportional to 91,190.40, 136,766.40 and 38,601.60

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Solution

The fourth proportional to 91,190.40, 136,766.40 and 38,601.60 is: 57,894.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,190.40 : 136,766.40 = 38,601.60 : x
  2. Step 2: Convert to fraction form
    91,190.40/136,766.40 = 38,601.60/x
  3. Step 3: Cross multiply
    91,190.40x = 136,766.40 × 38,601.60
  4. Step 4: Simplify right side
    91,190.40x = 5,279,401,866.24
  5. Step 5: Solve for x
    x = 5,279,401,866.24/91,190.40
  6. Step 6: Final answer
    x = 57,894.27

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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.