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Finding the Fourth Proportional to 25,840.80, 38,764.80 and 11,049.60

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Solution

The fourth proportional to 25,840.80, 38,764.80 and 11,049.60 is: 16,575.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,840.80 : 38,764.80 = 11,049.60 : x
  2. Step 2: Convert to fraction form
    25,840.80/38,764.80 = 11,049.60/x
  3. Step 3: Cross multiply
    25,840.80x = 38,764.80 × 11,049.60
  4. Step 4: Simplify right side
    25,840.80x = 428,335,534.08
  5. Step 5: Solve for x
    x = 428,335,534.08/25,840.80
  6. Step 6: Final answer
    x = 16,575.94

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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.