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Finding the Fourth Proportional to 168,809.70, 252,874.35 and 105,435.30

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Solution

The fourth proportional to 168,809.70, 252,874.35 and 105,435.30 is: 157,940.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,809.70 : 252,874.35 = 105,435.30 : x
  2. Step 2: Convert to fraction form
    168,809.70/252,874.35 = 105,435.30/x
  3. Step 3: Cross multiply
    168,809.70x = 252,874.35 × 105,435.30
  4. Step 4: Simplify right side
    168,809.70x = 26,661,882,954.56
  5. Step 5: Solve for x
    x = 26,661,882,954.56/168,809.70
  6. Step 6: Final answer
    x = 157,940.47

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1.5x scale

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.