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Finding the Fourth Proportional to 132,578.63, 198,788.63 and 89,936.46

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Solution

The fourth proportional to 132,578.63, 198,788.63 and 89,936.46 is: 134,850.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,578.63 : 198,788.63 = 89,936.46 : x
  2. Step 2: Convert to fraction form
    132,578.63/198,788.63 = 89,936.46/x
  3. Step 3: Cross multiply
    132,578.63x = 198,788.63 × 89,936.46
  4. Step 4: Simplify right side
    132,578.63x = 17,878,345,220.77
  5. Step 5: Solve for x
    x = 17,878,345,220.77/132,578.63
  6. Step 6: Final answer
    x = 134,850.88

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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.