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Finding the Fourth Proportional to 618,256.63, 853,241.48 and 389,010.43

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Solution

The fourth proportional to 618,256.63, 853,241.48 and 389,010.43 is: 536,864.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,256.63 : 853,241.48 = 389,010.43 : x
  2. Step 2: Convert to fraction form
    618,256.63/853,241.48 = 389,010.43/x
  3. Step 3: Cross multiply
    618,256.63x = 853,241.48 × 389,010.43
  4. Step 4: Simplify right side
    618,256.63x = 331,919,835,608.93
  5. Step 5: Solve for x
    x = 331,919,835,608.93/618,256.63
  6. Step 6: Final answer
    x = 536,864.17

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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.