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Finding the Fourth Proportional to 263,486.70, 394,711.65 and 157,992.30

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Solution

The fourth proportional to 263,486.70, 394,711.65 and 157,992.30 is: 236,677.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,486.70 : 394,711.65 = 157,992.30 : x
  2. Step 2: Convert to fraction form
    263,486.70/394,711.65 = 157,992.30/x
  3. Step 3: Cross multiply
    263,486.70x = 394,711.65 × 157,992.30
  4. Step 4: Simplify right side
    263,486.70x = 62,361,401,420.30
  5. Step 5: Solve for x
    x = 62,361,401,420.30/263,486.70
  6. Step 6: Final answer
    x = 236,677.61

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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.