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Finding the Fourth Proportional to 262,885.20, 394,327.80 and 178,904.40

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Solution

The fourth proportional to 262,885.20, 394,327.80 and 178,904.40 is: 268,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,885.20 : 394,327.80 = 178,904.40 : x
  2. Step 2: Convert to fraction form
    262,885.20/394,327.80 = 178,904.40/x
  3. Step 3: Cross multiply
    262,885.20x = 394,327.80 × 178,904.40
  4. Step 4: Simplify right side
    262,885.20x = 70,546,978,462.32
  5. Step 5: Solve for x
    x = 70,546,978,462.32/262,885.20
  6. Step 6: Final answer
    x = 268,356.60

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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.