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Finding the Fourth Proportional to 223,759.74, 335,640.51 and 90,642.54

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Solution

The fourth proportional to 223,759.74, 335,640.51 and 90,642.54 is: 135,964.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,759.74 : 335,640.51 = 90,642.54 : x
  2. Step 2: Convert to fraction form
    223,759.74/335,640.51 = 90,642.54/x
  3. Step 3: Cross multiply
    223,759.74x = 335,640.51 × 90,642.54
  4. Step 4: Simplify right side
    223,759.74x = 30,423,308,353.30
  5. Step 5: Solve for x
    x = 30,423,308,353.30/223,759.74
  6. Step 6: Final answer
    x = 135,964.17

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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.