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Finding the Fourth Proportional to 18,622.60, 27,925.09 and 6,768.11

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Solution

The fourth proportional to 18,622.60, 27,925.09 and 6,768.11 is: 10,148.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.60 : 27,925.09 = 6,768.11 : x
  2. Step 2: Convert to fraction form
    18,622.60/27,925.09 = 6,768.11/x
  3. Step 3: Cross multiply
    18,622.60x = 27,925.09 × 6,768.11
  4. Step 4: Simplify right side
    18,622.60x = 189,000,133.77
  5. Step 5: Solve for x
    x = 189,000,133.77/18,622.60
  6. Step 6: Final answer
    x = 10,148.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.