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Finding the Fourth Proportional to 668,728.40, 1,003,092.60 and 295,480.40

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Solution

The fourth proportional to 668,728.40, 1,003,092.60 and 295,480.40 is: 443,220.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,728.40 : 1,003,092.60 = 295,480.40 : x
  2. Step 2: Convert to fraction form
    668,728.40/1,003,092.60 = 295,480.40/x
  3. Step 3: Cross multiply
    668,728.40x = 1,003,092.60 × 295,480.40
  4. Step 4: Simplify right side
    668,728.40x = 296,394,202,685.04
  5. Step 5: Solve for x
    x = 296,394,202,685.04/668,728.40
  6. Step 6: Final answer
    x = 443,220.60

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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.