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Finding the Fourth Proportional to 325,816.60, 488,336.10 and 136,276.60

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Solution

The fourth proportional to 325,816.60, 488,336.10 and 136,276.60 is: 204,252.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,816.60 : 488,336.10 = 136,276.60 : x
  2. Step 2: Convert to fraction form
    325,816.60/488,336.10 = 136,276.60/x
  3. Step 3: Cross multiply
    325,816.60x = 488,336.10 × 136,276.60
  4. Step 4: Simplify right side
    325,816.60x = 66,548,783,365.26
  5. Step 5: Solve for x
    x = 66,548,783,365.26/325,816.60
  6. Step 6: Final answer
    x = 204,252.28

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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.