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Finding the Fourth Proportional to 505,593.36, 697,709.16 and 279,234

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Solution

The fourth proportional to 505,593.36, 697,709.16 and 279,234 is: 385,337.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,593.36 : 697,709.16 = 279,234 : x
  2. Step 2: Convert to fraction form
    505,593.36/697,709.16 = 279,234/x
  3. Step 3: Cross multiply
    505,593.36x = 697,709.16 × 279,234
  4. Step 4: Simplify right side
    505,593.36x = 194,824,119,583.44
  5. Step 5: Solve for x
    x = 194,824,119,583.44/505,593.36
  6. Step 6: Final answer
    x = 385,337.58

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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.