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Finding the Fourth Proportional to 50,731.20, 71,179.20 and 50,731.20

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Solution

The fourth proportional to 50,731.20, 71,179.20 and 50,731.20 is: 71,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,731.20 : 71,179.20 = 50,731.20 : x
  2. Step 2: Convert to fraction form
    50,731.20/71,179.20 = 50,731.20/x
  3. Step 3: Cross multiply
    50,731.20x = 71,179.20 × 50,731.20
  4. Step 4: Simplify right side
    50,731.20x = 3,611,006,231.04
  5. Step 5: Solve for x
    x = 3,611,006,231.04/50,731.20
  6. Step 6: Final answer
    x = 71,179.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.