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Finding the Fourth Proportional to 18,697.72, 25,752.69 and 16,179.94

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Solution

The fourth proportional to 18,697.72, 25,752.69 and 16,179.94 is: 22,284.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.72 : 25,752.69 = 16,179.94 : x
  2. Step 2: Convert to fraction form
    18,697.72/25,752.69 = 16,179.94/x
  3. Step 3: Cross multiply
    18,697.72x = 25,752.69 × 16,179.94
  4. Step 4: Simplify right side
    18,697.72x = 416,676,979.04
  5. Step 5: Solve for x
    x = 416,676,979.04/18,697.72
  6. Step 6: Final answer
    x = 22,284.91

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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.