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Finding the Fourth Proportional to 18,825.30, 25,978.52 and 10,441.80

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Solution

The fourth proportional to 18,825.30, 25,978.52 and 10,441.80 is: 14,409.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.30 : 25,978.52 = 10,441.80 : x
  2. Step 2: Convert to fraction form
    18,825.30/25,978.52 = 10,441.80/x
  3. Step 3: Cross multiply
    18,825.30x = 25,978.52 × 10,441.80
  4. Step 4: Simplify right side
    18,825.30x = 271,262,510.14
  5. Step 5: Solve for x
    x = 271,262,510.14/18,825.30
  6. Step 6: Final answer
    x = 14,409.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.