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Finding the Fourth Proportional to 18,757.74, 25,884.71 and 10,258.21

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Solution

The fourth proportional to 18,757.74, 25,884.71 and 10,258.21 is: 14,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.74 : 25,884.71 = 10,258.21 : x
  2. Step 2: Convert to fraction form
    18,757.74/25,884.71 = 10,258.21/x
  3. Step 3: Cross multiply
    18,757.74x = 25,884.71 × 10,258.21
  4. Step 4: Simplify right side
    18,757.74x = 265,530,790.97
  5. Step 5: Solve for x
    x = 265,530,790.97/18,757.74
  6. Step 6: Final answer
    x = 14,155.80

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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.