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Finding the Fourth Proportional to 192,693.70, 289,026.15 and 80,344.90

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Solution

The fourth proportional to 192,693.70, 289,026.15 and 80,344.90 is: 120,511.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,693.70 : 289,026.15 = 80,344.90 : x
  2. Step 2: Convert to fraction form
    192,693.70/289,026.15 = 80,344.90/x
  3. Step 3: Cross multiply
    192,693.70x = 289,026.15 × 80,344.90
  4. Step 4: Simplify right side
    192,693.70x = 23,221,777,119.14
  5. Step 5: Solve for x
    x = 23,221,777,119.14/192,693.70
  6. Step 6: Final answer
    x = 120,511.35

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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.