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Finding the Fourth Proportional to 495,791.90, 683,940.99 and 323,810.63

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Solution

The fourth proportional to 495,791.90, 683,940.99 and 323,810.63 is: 446,694.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,791.90 : 683,940.99 = 323,810.63 : x
  2. Step 2: Convert to fraction form
    495,791.90/683,940.99 = 323,810.63/x
  3. Step 3: Cross multiply
    495,791.90x = 683,940.99 × 323,810.63
  4. Step 4: Simplify right side
    495,791.90x = 221,467,359,435.02
  5. Step 5: Solve for x
    x = 221,467,359,435.02/495,791.90
  6. Step 6: Final answer
    x = 446,694.19

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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.