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Finding the Fourth Proportional to 25,468.96, 38,180.88 and 20,788.96

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Solution

The fourth proportional to 25,468.96, 38,180.88 and 20,788.96 is: 31,165.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,468.96 : 38,180.88 = 20,788.96 : x
  2. Step 2: Convert to fraction form
    25,468.96/38,180.88 = 20,788.96/x
  3. Step 3: Cross multiply
    25,468.96x = 38,180.88 × 20,788.96
  4. Step 4: Simplify right side
    25,468.96x = 793,740,787.08
  5. Step 5: Solve for x
    x = 793,740,787.08/25,468.96
  6. Step 6: Final answer
    x = 31,165.03

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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.