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Finding the Fourth Proportional to 18,492.54, 25,517.73 and 10,939.15

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Solution

The fourth proportional to 18,492.54, 25,517.73 and 10,939.15 is: 15,094.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492.54 : 25,517.73 = 10,939.15 : x
  2. Step 2: Convert to fraction form
    18,492.54/25,517.73 = 10,939.15/x
  3. Step 3: Cross multiply
    18,492.54x = 25,517.73 × 10,939.15
  4. Step 4: Simplify right side
    18,492.54x = 279,142,276.13
  5. Step 5: Solve for x
    x = 279,142,276.13/18,492.54
  6. Step 6: Final answer
    x = 15,094.86

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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.