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Finding the Fourth Proportional to 72,974.68, 109,463.10 and 48,173.56

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Solution

The fourth proportional to 72,974.68, 109,463.10 and 48,173.56 is: 72,261.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,974.68 : 109,463.10 = 48,173.56 : x
  2. Step 2: Convert to fraction form
    72,974.68/109,463.10 = 48,173.56/x
  3. Step 3: Cross multiply
    72,974.68x = 109,463.10 × 48,173.56
  4. Step 4: Simplify right side
    72,974.68x = 5,273,227,215.64
  5. Step 5: Solve for x
    x = 5,273,227,215.64/72,974.68
  6. Step 6: Final answer
    x = 72,261.05

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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.