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Finding the Fourth Proportional to 173,213.80, 259,772.10 and 54,921.40

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Solution

The fourth proportional to 173,213.80, 259,772.10 and 54,921.40 is: 82,366.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,213.80 : 259,772.10 = 54,921.40 : x
  2. Step 2: Convert to fraction form
    173,213.80/259,772.10 = 54,921.40/x
  3. Step 3: Cross multiply
    173,213.80x = 259,772.10 × 54,921.40
  4. Step 4: Simplify right side
    173,213.80x = 14,267,047,412.94
  5. Step 5: Solve for x
    x = 14,267,047,412.94/173,213.80
  6. Step 6: Final answer
    x = 82,366.69

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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.