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Finding the Fourth Proportional to 290,208.33, 400,505.45 and 193,245.93

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Solution

The fourth proportional to 290,208.33, 400,505.45 and 193,245.93 is: 266,691.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,208.33 : 400,505.45 = 193,245.93 : x
  2. Step 2: Convert to fraction form
    290,208.33/400,505.45 = 193,245.93/x
  3. Step 3: Cross multiply
    290,208.33x = 400,505.45 × 193,245.93
  4. Step 4: Simplify right side
    290,208.33x = 77,396,047,189.09
  5. Step 5: Solve for x
    x = 77,396,047,189.09/290,208.33
  6. Step 6: Final answer
    x = 266,691.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.