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Finding the Fourth Proportional to 404,609.36, 558,584.64 and 243,504

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Solution

The fourth proportional to 404,609.36, 558,584.64 and 243,504 is: 336,170.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,609.36 : 558,584.64 = 243,504 : x
  2. Step 2: Convert to fraction form
    404,609.36/558,584.64 = 243,504/x
  3. Step 3: Cross multiply
    404,609.36x = 558,584.64 × 243,504
  4. Step 4: Simplify right side
    404,609.36x = 136,017,594,178.56
  5. Step 5: Solve for x
    x = 136,017,594,178.56/404,609.36
  6. Step 6: Final answer
    x = 336,170.17

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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.