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Finding the Fourth Proportional to 404,643.86, 558,408.56 and 223,355.84

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Solution

The fourth proportional to 404,643.86, 558,408.56 and 223,355.84 is: 308,231.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,643.86 : 558,408.56 = 223,355.84 : x
  2. Step 2: Convert to fraction form
    404,643.86/558,408.56 = 223,355.84/x
  3. Step 3: Cross multiply
    404,643.86x = 558,408.56 × 223,355.84
  4. Step 4: Simplify right side
    404,643.86x = 124,723,809,073.17
  5. Step 5: Solve for x
    x = 124,723,809,073.17/404,643.86
  6. Step 6: Final answer
    x = 308,231.07

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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.