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Finding the Fourth Proportional to 25,861.98, 38,799.20 and 8,992.55

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Solution

The fourth proportional to 25,861.98, 38,799.20 and 8,992.55 is: 13,490.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,861.98 : 38,799.20 = 8,992.55 : x
  2. Step 2: Convert to fraction form
    25,861.98/38,799.20 = 8,992.55/x
  3. Step 3: Cross multiply
    25,861.98x = 38,799.20 × 8,992.55
  4. Step 4: Simplify right side
    25,861.98x = 348,903,865.44
  5. Step 5: Solve for x
    x = 348,903,865.44/25,861.98
  6. Step 6: Final answer
    x = 13,490.99

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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.