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Finding the Fourth Proportional to 403,766.60, 605,431.20 and 166,841.60

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Solution

The fourth proportional to 403,766.60, 605,431.20 and 166,841.60 is: 250,172.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,766.60 : 605,431.20 = 166,841.60 : x
  2. Step 2: Convert to fraction form
    403,766.60/605,431.20 = 166,841.60/x
  3. Step 3: Cross multiply
    403,766.60x = 605,431.20 × 166,841.60
  4. Step 4: Simplify right side
    403,766.60x = 101,011,110,097.92
  5. Step 5: Solve for x
    x = 101,011,110,097.92/403,766.60
  6. Step 6: Final answer
    x = 250,172.03

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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.