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Finding the Fourth Proportional to 365,568.97, 503,363.67 and 319,991.89

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Solution

The fourth proportional to 365,568.97, 503,363.67 and 319,991.89 is: 440,607.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,568.97 : 503,363.67 = 319,991.89 : x
  2. Step 2: Convert to fraction form
    365,568.97/503,363.67 = 319,991.89/x
  3. Step 3: Cross multiply
    365,568.97x = 503,363.67 × 319,991.89
  4. Step 4: Simplify right side
    365,568.97x = 161,072,292,120.64
  5. Step 5: Solve for x
    x = 161,072,292,120.64/365,568.97
  6. Step 6: Final answer
    x = 440,607.12

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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.