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Finding the Fourth Proportional to 18,642.46, 25,725.87 and 10,679.02

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Solution

The fourth proportional to 18,642.46, 25,725.87 and 10,679.02 is: 14,736.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.46 : 25,725.87 = 10,679.02 : x
  2. Step 2: Convert to fraction form
    18,642.46/25,725.87 = 10,679.02/x
  3. Step 3: Cross multiply
    18,642.46x = 25,725.87 × 10,679.02
  4. Step 4: Simplify right side
    18,642.46x = 274,727,080.25
  5. Step 5: Solve for x
    x = 274,727,080.25/18,642.46
  6. Step 6: Final answer
    x = 14,736.63

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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.