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Finding the Fourth Proportional to 333,991.13, 501,680.70 and 270,021.57

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Solution

The fourth proportional to 333,991.13, 501,680.70 and 270,021.57 is: 405,593.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,991.13 : 501,680.70 = 270,021.57 : x
  2. Step 2: Convert to fraction form
    333,991.13/501,680.70 = 270,021.57/x
  3. Step 3: Cross multiply
    333,991.13x = 501,680.70 × 270,021.57
  4. Step 4: Simplify right side
    333,991.13x = 135,464,610,783.89
  5. Step 5: Solve for x
    x = 135,464,610,783.89/333,991.13
  6. Step 6: Final answer
    x = 405,593.44

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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.