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Finding the Fourth Proportional to 443,267.60, 664,512.60 and 265,845.20

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Solution

The fourth proportional to 443,267.60, 664,512.60 and 265,845.20 is: 398,534.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,267.60 : 664,512.60 = 265,845.20 : x
  2. Step 2: Convert to fraction form
    443,267.60/664,512.60 = 265,845.20/x
  3. Step 3: Cross multiply
    443,267.60x = 664,512.60 × 265,845.20
  4. Step 4: Simplify right side
    443,267.60x = 176,657,485,049.52
  5. Step 5: Solve for x
    x = 176,657,485,049.52/443,267.60
  6. Step 6: Final answer
    x = 398,534.62

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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.