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Finding the Fourth Proportional to 18,951.92, 26,155.56 and 10,995.92

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Solution

The fourth proportional to 18,951.92, 26,155.56 and 10,995.92 is: 15,175.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.92 : 26,155.56 = 10,995.92 : x
  2. Step 2: Convert to fraction form
    18,951.92/26,155.56 = 10,995.92/x
  3. Step 3: Cross multiply
    18,951.92x = 26,155.56 × 10,995.92
  4. Step 4: Simplify right side
    18,951.92x = 287,604,445.32
  5. Step 5: Solve for x
    x = 287,604,445.32/18,951.92
  6. Step 6: Final answer
    x = 15,175.48

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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.