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Finding the Fourth Proportional to 548,856.80, 823,285.20 and 194,271.20

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Solution

The fourth proportional to 548,856.80, 823,285.20 and 194,271.20 is: 291,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,856.80 : 823,285.20 = 194,271.20 : x
  2. Step 2: Convert to fraction form
    548,856.80/823,285.20 = 194,271.20/x
  3. Step 3: Cross multiply
    548,856.80x = 823,285.20 × 194,271.20
  4. Step 4: Simplify right side
    548,856.80x = 159,940,603,746.24
  5. Step 5: Solve for x
    x = 159,940,603,746.24/548,856.80
  6. Step 6: Final answer
    x = 291,406.80

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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.