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Finding the Fourth Proportional to 25,493.85, 35,223.75 and 20,157.12

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Solution

The fourth proportional to 25,493.85, 35,223.75 and 20,157.12 is: 27,850.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,493.85 : 35,223.75 = 20,157.12 : x
  2. Step 2: Convert to fraction form
    25,493.85/35,223.75 = 20,157.12/x
  3. Step 3: Cross multiply
    25,493.85x = 35,223.75 × 20,157.12
  4. Step 4: Simplify right side
    25,493.85x = 710,009,355.60
  5. Step 5: Solve for x
    x = 710,009,355.60/25,493.85
  6. Step 6: Final answer
    x = 27,850.22

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