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Finding the Fourth Proportional to 611,893.12, 844,411.62 and 339,986.04

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Solution

The fourth proportional to 611,893.12, 844,411.62 and 339,986.04 is: 469,180.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,893.12 : 844,411.62 = 339,986.04 : x
  2. Step 2: Convert to fraction form
    611,893.12/844,411.62 = 339,986.04/x
  3. Step 3: Cross multiply
    611,893.12x = 844,411.62 × 339,986.04
  4. Step 4: Simplify right side
    611,893.12x = 287,088,162,813.79
  5. Step 5: Solve for x
    x = 287,088,162,813.79/611,893.12
  6. Step 6: Final answer
    x = 469,180.24

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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.