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Finding the Fourth Proportional to 408,195.02, 563,321.31 and 247,079.54

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Solution

The fourth proportional to 408,195.02, 563,321.31 and 247,079.54 is: 340,977.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,195.02 : 563,321.31 = 247,079.54 : x
  2. Step 2: Convert to fraction form
    408,195.02/563,321.31 = 247,079.54/x
  3. Step 3: Cross multiply
    408,195.02x = 563,321.31 × 247,079.54
  4. Step 4: Simplify right side
    408,195.02x = 139,185,170,147.00
  5. Step 5: Solve for x
    x = 139,185,170,147.00/408,195.02
  6. Step 6: Final answer
    x = 340,977.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.