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Finding the Fourth Proportional to 867,982.80, 1,301,974.20 and 731,125.20

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Solution

The fourth proportional to 867,982.80, 1,301,974.20 and 731,125.20 is: 1,096,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,982.80 : 1,301,974.20 = 731,125.20 : x
  2. Step 2: Convert to fraction form
    867,982.80/1,301,974.20 = 731,125.20/x
  3. Step 3: Cross multiply
    867,982.80x = 1,301,974.20 × 731,125.20
  4. Step 4: Simplify right side
    867,982.80x = 951,906,147,369.84
  5. Step 5: Solve for x
    x = 951,906,147,369.84/867,982.80
  6. Step 6: Final answer
    x = 1,096,687.80

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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.