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Finding the Fourth Proportional to 25,992.45, 38,981.76 and 7,271.33

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Solution

The fourth proportional to 25,992.45, 38,981.76 and 7,271.33 is: 10,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,992.45 : 38,981.76 = 7,271.33 : x
  2. Step 2: Convert to fraction form
    25,992.45/38,981.76 = 7,271.33/x
  3. Step 3: Cross multiply
    25,992.45x = 38,981.76 × 7,271.33
  4. Step 4: Simplify right side
    25,992.45x = 283,449,240.94
  5. Step 5: Solve for x
    x = 283,449,240.94/25,992.45
  6. Step 6: Final answer
    x = 10,905.06

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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.