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Finding the Fourth Proportional to 18,841.96, 28,266.94 and 7,154.92

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Solution

The fourth proportional to 18,841.96, 28,266.94 and 7,154.92 is: 10,733.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,841.96 : 28,266.94 = 7,154.92 : x
  2. Step 2: Convert to fraction form
    18,841.96/28,266.94 = 7,154.92/x
  3. Step 3: Cross multiply
    18,841.96x = 28,266.94 × 7,154.92
  4. Step 4: Simplify right side
    18,841.96x = 202,247,694.34
  5. Step 5: Solve for x
    x = 202,247,694.34/18,841.96
  6. Step 6: Final answer
    x = 10,733.90

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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.