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Finding the Fourth Proportional to 25,992.55, 38,991.28 and 7,272.59

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Solution

The fourth proportional to 25,992.55, 38,991.28 and 7,272.59 is: 10,909.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,992.55 : 38,991.28 = 7,272.59 : x
  2. Step 2: Convert to fraction form
    25,992.55/38,991.28 = 7,272.59/x
  3. Step 3: Cross multiply
    25,992.55x = 38,991.28 × 7,272.59
  4. Step 4: Simplify right side
    25,992.55x = 283,567,553.37
  5. Step 5: Solve for x
    x = 283,567,553.37/25,992.55
  6. Step 6: Final answer
    x = 10,909.57

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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.