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Finding the Fourth Proportional to 132,975.72, 198,684.78 and 128,324.70

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Solution

The fourth proportional to 132,975.72, 198,684.78 and 128,324.70 is: 191,735.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,975.72 : 198,684.78 = 128,324.70 : x
  2. Step 2: Convert to fraction form
    132,975.72/198,684.78 = 128,324.70/x
  3. Step 3: Cross multiply
    132,975.72x = 198,684.78 × 128,324.70
  4. Step 4: Simplify right side
    132,975.72x = 25,496,164,788.07
  5. Step 5: Solve for x
    x = 25,496,164,788.07/132,975.72
  6. Step 6: Final answer
    x = 191,735.49

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.