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Finding the Fourth Proportional to 72,540.84, 108,832.32 and 25,797.36

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Solution

The fourth proportional to 72,540.84, 108,832.32 and 25,797.36 is: 38,703.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,540.84 : 108,832.32 = 25,797.36 : x
  2. Step 2: Convert to fraction form
    72,540.84/108,832.32 = 25,797.36/x
  3. Step 3: Cross multiply
    72,540.84x = 108,832.32 × 25,797.36
  4. Step 4: Simplify right side
    72,540.84x = 2,807,586,538.68
  5. Step 5: Solve for x
    x = 2,807,586,538.68/72,540.84
  6. Step 6: Final answer
    x = 38,703.53

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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.