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Finding the Fourth Proportional to 685,928.80, 946,266.60 and 444,292

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Solution

The fourth proportional to 685,928.80, 946,266.60 and 444,292 is: 612,918.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,928.80 : 946,266.60 = 444,292 : x
  2. Step 2: Convert to fraction form
    685,928.80/946,266.60 = 444,292/x
  3. Step 3: Cross multiply
    685,928.80x = 946,266.60 × 444,292
  4. Step 4: Simplify right side
    685,928.80x = 420,418,680,247.20
  5. Step 5: Solve for x
    x = 420,418,680,247.20/685,928.80
  6. Step 6: Final answer
    x = 612,918.83

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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.