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Finding the Fourth Proportional to 73,173.90, 109,553.31 and 47,902.88

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Solution

The fourth proportional to 73,173.90, 109,553.31 and 47,902.88 is: 71,718.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,173.90 : 109,553.31 = 47,902.88 : x
  2. Step 2: Convert to fraction form
    73,173.90/109,553.31 = 47,902.88/x
  3. Step 3: Cross multiply
    73,173.90x = 109,553.31 × 47,902.88
  4. Step 4: Simplify right side
    73,173.90x = 5,247,919,336.42
  5. Step 5: Solve for x
    x = 5,247,919,336.42/73,173.90
  6. Step 6: Final answer
    x = 71,718.46

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1.5x scale

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.