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Finding the Fourth Proportional to 57,492.20, 86,238.32 and 25,865.32

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Solution

The fourth proportional to 57,492.20, 86,238.32 and 25,865.32 is: 38,797.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,492.20 : 86,238.32 = 25,865.32 : x
  2. Step 2: Convert to fraction form
    57,492.20/86,238.32 = 25,865.32/x
  3. Step 3: Cross multiply
    57,492.20x = 86,238.32 × 25,865.32
  4. Step 4: Simplify right side
    57,492.20x = 2,230,581,721.53
  5. Step 5: Solve for x
    x = 2,230,581,721.53/57,492.20
  6. Step 6: Final answer
    x = 38,797.99

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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.