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Finding the Fourth Proportional to 404,690.94, 558,433.67 and 223,391.16

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Solution

The fourth proportional to 404,690.94, 558,433.67 and 223,391.16 is: 308,257.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,690.94 : 558,433.67 = 223,391.16 : x
  2. Step 2: Convert to fraction form
    404,690.94/558,433.67 = 223,391.16/x
  3. Step 3: Cross multiply
    404,690.94x = 558,433.67 × 223,391.16
  4. Step 4: Simplify right side
    404,690.94x = 124,749,144,207.40
  5. Step 5: Solve for x
    x = 124,749,144,207.40/404,690.94
  6. Step 6: Final answer
    x = 308,257.81

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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.