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Finding the Fourth Proportional to 404,894.10, 606,455.40 and 262,243.38

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Solution

The fourth proportional to 404,894.10, 606,455.40 and 262,243.38 is: 392,791.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,894.10 : 606,455.40 = 262,243.38 : x
  2. Step 2: Convert to fraction form
    404,894.10/606,455.40 = 262,243.38/x
  3. Step 3: Cross multiply
    404,894.10x = 606,455.40 × 262,243.38
  4. Step 4: Simplify right side
    404,894.10x = 159,038,913,915.25
  5. Step 5: Solve for x
    x = 159,038,913,915.25/404,894.10
  6. Step 6: Final answer
    x = 392,791.38

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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.