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Finding the Fourth Proportional to 18,792.22, 25,864.22 and 16,109.50

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Solution

The fourth proportional to 18,792.22, 25,864.22 and 16,109.50 is: 22,171.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.22 : 25,864.22 = 16,109.50 : x
  2. Step 2: Convert to fraction form
    18,792.22/25,864.22 = 16,109.50/x
  3. Step 3: Cross multiply
    18,792.22x = 25,864.22 × 16,109.50
  4. Step 4: Simplify right side
    18,792.22x = 416,659,652.09
  5. Step 5: Solve for x
    x = 416,659,652.09/18,792.22
  6. Step 6: Final answer
    x = 22,171.92

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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.