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Finding the Fourth Proportional to 265,003.20, 397,245.60 and 107,020.80

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Solution

The fourth proportional to 265,003.20, 397,245.60 and 107,020.80 is: 160,426.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,003.20 : 397,245.60 = 107,020.80 : x
  2. Step 2: Convert to fraction form
    265,003.20/397,245.60 = 107,020.80/x
  3. Step 3: Cross multiply
    265,003.20x = 397,245.60 × 107,020.80
  4. Step 4: Simplify right side
    265,003.20x = 42,513,541,908.48
  5. Step 5: Solve for x
    x = 42,513,541,908.48/265,003.20
  6. Step 6: Final answer
    x = 160,426.52

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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.