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Finding the Fourth Proportional to 223,393.20, 335,057.40 and 65,605.20

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Solution

The fourth proportional to 223,393.20, 335,057.40 and 65,605.20 is: 98,398.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,393.20 : 335,057.40 = 65,605.20 : x
  2. Step 2: Convert to fraction form
    223,393.20/335,057.40 = 65,605.20/x
  3. Step 3: Cross multiply
    223,393.20x = 335,057.40 × 65,605.20
  4. Step 4: Simplify right side
    223,393.20x = 21,981,507,738.48
  5. Step 5: Solve for x
    x = 21,981,507,738.48/223,393.20
  6. Step 6: Final answer
    x = 98,398.28

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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.