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Finding the Fourth Proportional to 262,669.50, 394,061.76 and 85,194.45

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Solution

The fourth proportional to 262,669.50, 394,061.76 and 85,194.45 is: 127,810.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,669.50 : 394,061.76 = 85,194.45 : x
  2. Step 2: Convert to fraction form
    262,669.50/394,061.76 = 85,194.45/x
  3. Step 3: Cross multiply
    262,669.50x = 394,061.76 × 85,194.45
  4. Step 4: Simplify right side
    262,669.50x = 33,571,874,909.23
  5. Step 5: Solve for x
    x = 33,571,874,909.23/262,669.50
  6. Step 6: Final answer
    x = 127,810.33

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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.