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Finding the Fourth Proportional to 131,052.60, 196,809.30 and 126,905.40

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Solution

The fourth proportional to 131,052.60, 196,809.30 and 126,905.40 is: 190,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,052.60 : 196,809.30 = 126,905.40 : x
  2. Step 2: Convert to fraction form
    131,052.60/196,809.30 = 126,905.40/x
  3. Step 3: Cross multiply
    131,052.60x = 196,809.30 × 126,905.40
  4. Step 4: Simplify right side
    131,052.60x = 24,976,162,940.22
  5. Step 5: Solve for x
    x = 24,976,162,940.22/131,052.60
  6. Step 6: Final answer
    x = 190,581.21

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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.