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Finding the Fourth Proportional to 611,706.15, 844,125.92 and 339,791.55

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Solution

The fourth proportional to 611,706.15, 844,125.92 and 339,791.55 is: 468,896.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,706.15 : 844,125.92 = 339,791.55 : x
  2. Step 2: Convert to fraction form
    611,706.15/844,125.92 = 339,791.55/x
  3. Step 3: Cross multiply
    611,706.15x = 844,125.92 × 339,791.55
  4. Step 4: Simplify right side
    611,706.15x = 286,826,853,053.02
  5. Step 5: Solve for x
    x = 286,826,853,053.02/611,706.15
  6. Step 6: Final answer
    x = 468,896.47

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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.