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Finding the Fourth Proportional to 441,081.40, 661,622.10 and 403,756.60

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Solution

The fourth proportional to 441,081.40, 661,622.10 and 403,756.60 is: 605,634.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,081.40 : 661,622.10 = 403,756.60 : x
  2. Step 2: Convert to fraction form
    441,081.40/661,622.10 = 403,756.60/x
  3. Step 3: Cross multiply
    441,081.40x = 661,622.10 × 403,756.60
  4. Step 4: Simplify right side
    441,081.40x = 267,134,289,580.86
  5. Step 5: Solve for x
    x = 267,134,289,580.86/441,081.40
  6. Step 6: Final answer
    x = 605,634.90

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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.