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Finding the Fourth Proportional to 120,615.40, 180,836.70 and 50,458.60

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Solution

The fourth proportional to 120,615.40, 180,836.70 and 50,458.60 is: 75,651.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,615.40 : 180,836.70 = 50,458.60 : x
  2. Step 2: Convert to fraction form
    120,615.40/180,836.70 = 50,458.60/x
  3. Step 3: Cross multiply
    120,615.40x = 180,836.70 × 50,458.60
  4. Step 4: Simplify right side
    120,615.40x = 9,124,766,710.62
  5. Step 5: Solve for x
    x = 9,124,766,710.62/120,615.40
  6. Step 6: Final answer
    x = 75,651.76

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.