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Finding the Fourth Proportional to 481,934.16, 722,751.80 and 386,940.60

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Solution

The fourth proportional to 481,934.16, 722,751.80 and 386,940.60 is: 580,290.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,934.16 : 722,751.80 = 386,940.60 : x
  2. Step 2: Convert to fraction form
    481,934.16/722,751.80 = 386,940.60/x
  3. Step 3: Cross multiply
    481,934.16x = 722,751.80 × 386,940.60
  4. Step 4: Simplify right side
    481,934.16x = 279,662,013,208.38
  5. Step 5: Solve for x
    x = 279,662,013,208.38/481,934.16
  6. Step 6: Final answer
    x = 580,290.91

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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.