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Finding the Fourth Proportional to 406.60, 609.93 and 132.68

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Solution

The fourth proportional to 406.60, 609.93 and 132.68 is: 199.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.60 : 609.93 = 132.68 : x
  2. Step 2: Convert to fraction form
    406.60/609.93 = 132.68/x
  3. Step 3: Cross multiply
    406.60x = 609.93 × 132.68
  4. Step 4: Simplify right side
    406.60x = 80,927.04
  5. Step 5: Solve for x
    x = 80,927.04/406.60
  6. Step 6: Final answer
    x = 199.03

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.