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Finding the Fourth Proportional to 325,905.20, 488,906.40 and 115,526.60

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Solution

The fourth proportional to 325,905.20, 488,906.40 and 115,526.60 is: 173,307.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,905.20 : 488,906.40 = 115,526.60 : x
  2. Step 2: Convert to fraction form
    325,905.20/488,906.40 = 115,526.60/x
  3. Step 3: Cross multiply
    325,905.20x = 488,906.40 × 115,526.60
  4. Step 4: Simplify right side
    325,905.20x = 56,481,694,110.24
  5. Step 5: Solve for x
    x = 56,481,694,110.24/325,905.20
  6. Step 6: Final answer
    x = 173,307.13

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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.