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Finding the Fourth Proportional to 18,716.92, 25,830.18 and 10,761.64

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Solution

The fourth proportional to 18,716.92, 25,830.18 and 10,761.64 is: 14,851.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.92 : 25,830.18 = 10,761.64 : x
  2. Step 2: Convert to fraction form
    18,716.92/25,830.18 = 10,761.64/x
  3. Step 3: Cross multiply
    18,716.92x = 25,830.18 × 10,761.64
  4. Step 4: Simplify right side
    18,716.92x = 277,975,098.30
  5. Step 5: Solve for x
    x = 277,975,098.30/18,716.92
  6. Step 6: Final answer
    x = 14,851.54

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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.