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Finding the Fourth Proportional to 18,671.72, 25,792.12 and 17,343.11

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Solution

The fourth proportional to 18,671.72, 25,792.12 and 17,343.11 is: 23,956.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.72 : 25,792.12 = 17,343.11 : x
  2. Step 2: Convert to fraction form
    18,671.72/25,792.12 = 17,343.11/x
  3. Step 3: Cross multiply
    18,671.72x = 25,792.12 × 17,343.11
  4. Step 4: Simplify right side
    18,671.72x = 447,315,660.45
  5. Step 5: Solve for x
    x = 447,315,660.45/18,671.72
  6. Step 6: Final answer
    x = 23,956.86

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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.