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Finding the Fourth Proportional to 25,772.88, 38,662.88 and 8,236.72

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Solution

The fourth proportional to 25,772.88, 38,662.88 and 8,236.72 is: 12,356.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,772.88 : 38,662.88 = 8,236.72 : x
  2. Step 2: Convert to fraction form
    25,772.88/38,662.88 = 8,236.72/x
  3. Step 3: Cross multiply
    25,772.88x = 38,662.88 × 8,236.72
  4. Step 4: Simplify right side
    25,772.88x = 318,455,316.95
  5. Step 5: Solve for x
    x = 318,455,316.95/25,772.88
  6. Step 6: Final answer
    x = 12,356.22

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1.5x scale

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.