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Finding the Fourth Proportional to 109,957.80, 164,915.10 and 36,085.80

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Solution

The fourth proportional to 109,957.80, 164,915.10 and 36,085.80 is: 54,121.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,957.80 : 164,915.10 = 36,085.80 : x
  2. Step 2: Convert to fraction form
    109,957.80/164,915.10 = 36,085.80/x
  3. Step 3: Cross multiply
    109,957.80x = 164,915.10 × 36,085.80
  4. Step 4: Simplify right side
    109,957.80x = 5,951,093,315.58
  5. Step 5: Solve for x
    x = 5,951,093,315.58/109,957.80
  6. Step 6: Final answer
    x = 54,121.61

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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.