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Finding the Fourth Proportional to 72,951.53, 109,418.18 and 25,558.02

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Solution

The fourth proportional to 72,951.53, 109,418.18 and 25,558.02 is: 38,333.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,951.53 : 109,418.18 = 25,558.02 : x
  2. Step 2: Convert to fraction form
    72,951.53/109,418.18 = 25,558.02/x
  3. Step 3: Cross multiply
    72,951.53x = 109,418.18 × 25,558.02
  4. Step 4: Simplify right side
    72,951.53x = 2,796,511,905.01
  5. Step 5: Solve for x
    x = 2,796,511,905.01/72,951.53
  6. Step 6: Final answer
    x = 38,333.84

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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.