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Finding the Fourth Proportional to 400,794.20, 601,260.54 and 134,580.40

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Solution

The fourth proportional to 400,794.20, 601,260.54 and 134,580.40 is: 201,893.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,794.20 : 601,260.54 = 134,580.40 : x
  2. Step 2: Convert to fraction form
    400,794.20/601,260.54 = 134,580.40/x
  3. Step 3: Cross multiply
    400,794.20x = 601,260.54 × 134,580.40
  4. Step 4: Simplify right side
    400,794.20x = 80,917,883,977.42
  5. Step 5: Solve for x
    x = 80,917,883,977.42/400,794.20
  6. Step 6: Final answer
    x = 201,893.85

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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.