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Finding the Fourth Proportional to 132,917.60, 199,246.80 and 118,920.80

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Solution

The fourth proportional to 132,917.60, 199,246.80 and 118,920.80 is: 178,265.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,917.60 : 199,246.80 = 118,920.80 : x
  2. Step 2: Convert to fraction form
    132,917.60/199,246.80 = 118,920.80/x
  3. Step 3: Cross multiply
    132,917.60x = 199,246.80 × 118,920.80
  4. Step 4: Simplify right side
    132,917.60x = 23,694,588,853.44
  5. Step 5: Solve for x
    x = 23,694,588,853.44/132,917.60
  6. Step 6: Final answer
    x = 178,265.25

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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.