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Finding the Fourth Proportional to 911,838.33, 1,366,636.39 and 511,638.32

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Solution

The fourth proportional to 911,838.33, 1,366,636.39 and 511,638.32 is: 766,828.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,838.33 : 1,366,636.39 = 511,638.32 : x
  2. Step 2: Convert to fraction form
    911,838.33/1,366,636.39 = 511,638.32/x
  3. Step 3: Cross multiply
    911,838.33x = 1,366,636.39 × 511,638.32
  4. Step 4: Simplify right side
    911,838.33x = 699,223,548,767.96
  5. Step 5: Solve for x
    x = 699,223,548,767.96/911,838.33
  6. Step 6: Final answer
    x = 766,828.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.