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Finding the Fourth Proportional to 416,091.40, 624,137.10 and 389,847.40

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Solution

The fourth proportional to 416,091.40, 624,137.10 and 389,847.40 is: 584,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,091.40 : 624,137.10 = 389,847.40 : x
  2. Step 2: Convert to fraction form
    416,091.40/624,137.10 = 389,847.40/x
  3. Step 3: Cross multiply
    416,091.40x = 624,137.10 × 389,847.40
  4. Step 4: Simplify right side
    416,091.40x = 243,318,225,678.54
  5. Step 5: Solve for x
    x = 243,318,225,678.54/416,091.40
  6. Step 6: Final answer
    x = 584,771.10

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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.