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Finding the Fourth Proportional to 262,852.80, 394,376.40 and 105,194.40

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Solution

The fourth proportional to 262,852.80, 394,376.40 and 105,194.40 is: 157,830.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,852.80 : 394,376.40 = 105,194.40 : x
  2. Step 2: Convert to fraction form
    262,852.80/394,376.40 = 105,194.40/x
  3. Step 3: Cross multiply
    262,852.80x = 394,376.40 × 105,194.40
  4. Step 4: Simplify right side
    262,852.80x = 41,486,188,772.16
  5. Step 5: Solve for x
    x = 41,486,188,772.16/262,852.80
  6. Step 6: Final answer
    x = 157,830.50

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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.