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Finding the Fourth Proportional to 867,944.80, 1,301,917.20 and 731,087.20

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Solution

The fourth proportional to 867,944.80, 1,301,917.20 and 731,087.20 is: 1,096,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,944.80 : 1,301,917.20 = 731,087.20 : x
  2. Step 2: Convert to fraction form
    867,944.80/1,301,917.20 = 731,087.20/x
  3. Step 3: Cross multiply
    867,944.80x = 1,301,917.20 × 731,087.20
  4. Step 4: Simplify right side
    867,944.80x = 951,815,000,379.84
  5. Step 5: Solve for x
    x = 951,815,000,379.84/867,944.80
  6. Step 6: Final answer
    x = 1,096,630.80

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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.