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Finding the Fourth Proportional to 398,144.40, 596,410.20 and 247,923.60

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Solution

The fourth proportional to 398,144.40, 596,410.20 and 247,923.60 is: 371,383.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,144.40 : 596,410.20 = 247,923.60 : x
  2. Step 2: Convert to fraction form
    398,144.40/596,410.20 = 247,923.60/x
  3. Step 3: Cross multiply
    398,144.40x = 596,410.20 × 247,923.60
  4. Step 4: Simplify right side
    398,144.40x = 147,864,163,860.72
  5. Step 5: Solve for x
    x = 147,864,163,860.72/398,144.40
  6. Step 6: Final answer
    x = 371,383.26

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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.