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Finding the Fourth Proportional to 18,741.92, 25,863.12 and 10,358.24

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Solution

The fourth proportional to 18,741.92, 25,863.12 and 10,358.24 is: 14,293.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,741.92 : 25,863.12 = 10,358.24 : x
  2. Step 2: Convert to fraction form
    18,741.92/25,863.12 = 10,358.24/x
  3. Step 3: Cross multiply
    18,741.92x = 25,863.12 × 10,358.24
  4. Step 4: Simplify right side
    18,741.92x = 267,896,404.11
  5. Step 5: Solve for x
    x = 267,896,404.11/18,741.92
  6. Step 6: Final answer
    x = 14,293.97

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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.