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Finding the Fourth Proportional to 481,561.61, 722,287.73 and 126,603.30

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Solution

The fourth proportional to 481,561.61, 722,287.73 and 126,603.30 is: 189,890.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,561.61 : 722,287.73 = 126,603.30 : x
  2. Step 2: Convert to fraction form
    481,561.61/722,287.73 = 126,603.30/x
  3. Step 3: Cross multiply
    481,561.61x = 722,287.73 × 126,603.30
  4. Step 4: Simplify right side
    481,561.61x = 91,444,013,192.60
  5. Step 5: Solve for x
    x = 91,444,013,192.60/481,561.61
  6. Step 6: Final answer
    x = 189,890.58

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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.