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Finding the Fourth Proportional to 126,693.72, 174,809.95 and 80,770.82

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Solution

The fourth proportional to 126,693.72, 174,809.95 and 80,770.82 is: 111,446.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,693.72 : 174,809.95 = 80,770.82 : x
  2. Step 2: Convert to fraction form
    126,693.72/174,809.95 = 80,770.82/x
  3. Step 3: Cross multiply
    126,693.72x = 174,809.95 × 80,770.82
  4. Step 4: Simplify right side
    126,693.72x = 14,119,542,912.99
  5. Step 5: Solve for x
    x = 14,119,542,912.99/126,693.72
  6. Step 6: Final answer
    x = 111,446.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.