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Finding the Fourth Proportional to 132,993.60, 199,490.40 and 122,107.20

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Solution

The fourth proportional to 132,993.60, 199,490.40 and 122,107.20 is: 183,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,993.60 : 199,490.40 = 122,107.20 : x
  2. Step 2: Convert to fraction form
    132,993.60/199,490.40 = 122,107.20/x
  3. Step 3: Cross multiply
    132,993.60x = 199,490.40 × 122,107.20
  4. Step 4: Simplify right side
    132,993.60x = 24,359,214,170.88
  5. Step 5: Solve for x
    x = 24,359,214,170.88/132,993.60
  6. Step 6: Final answer
    x = 183,160.80

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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.