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Finding the Fourth Proportional to 72,544.96, 100,153.70 and 48,339.54

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Solution

The fourth proportional to 72,544.96, 100,153.70 and 48,339.54 is: 66,736.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,544.96 : 100,153.70 = 48,339.54 : x
  2. Step 2: Convert to fraction form
    72,544.96/100,153.70 = 48,339.54/x
  3. Step 3: Cross multiply
    72,544.96x = 100,153.70 × 48,339.54
  4. Step 4: Simplify right side
    72,544.96x = 4,841,383,787.30
  5. Step 5: Solve for x
    x = 4,841,383,787.30/72,544.96
  6. Step 6: Final answer
    x = 66,736.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.