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Finding the Fourth Proportional to 611,790.19, 844,405.23 and 339,951.36

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Solution

The fourth proportional to 611,790.19, 844,405.23 and 339,951.36 is: 469,207.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,790.19 : 844,405.23 = 339,951.36 : x
  2. Step 2: Convert to fraction form
    611,790.19/844,405.23 = 339,951.36/x
  3. Step 3: Cross multiply
    611,790.19x = 844,405.23 × 339,951.36
  4. Step 4: Simplify right side
    611,790.19x = 287,056,706,329.61
  5. Step 5: Solve for x
    x = 287,056,706,329.61/611,790.19
  6. Step 6: Final answer
    x = 469,207.76

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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.