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Finding the Fourth Proportional to 400,822.80, 601,234.20 and 368,163.60

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Solution

The fourth proportional to 400,822.80, 601,234.20 and 368,163.60 is: 552,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,822.80 : 601,234.20 = 368,163.60 : x
  2. Step 2: Convert to fraction form
    400,822.80/601,234.20 = 368,163.60/x
  3. Step 3: Cross multiply
    400,822.80x = 601,234.20 × 368,163.60
  4. Step 4: Simplify right side
    400,822.80x = 221,352,547,515.12
  5. Step 5: Solve for x
    x = 221,352,547,515.12/400,822.80
  6. Step 6: Final answer
    x = 552,245.40

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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.