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Finding the Fourth Proportional to 18,792.10, 25,880.61 and 18,383.86

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Solution

The fourth proportional to 18,792.10, 25,880.61 and 18,383.86 is: 25,318.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.10 : 25,880.61 = 18,383.86 : x
  2. Step 2: Convert to fraction form
    18,792.10/25,880.61 = 18,383.86/x
  3. Step 3: Cross multiply
    18,792.10x = 25,880.61 × 18,383.86
  4. Step 4: Simplify right side
    18,792.10x = 475,785,510.95
  5. Step 5: Solve for x
    x = 475,785,510.95/18,792.10
  6. Step 6: Final answer
    x = 25,318.38

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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.