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Finding the Fourth Proportional to 18,591.84, 27,891.36 and 8,203.68

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Solution

The fourth proportional to 18,591.84, 27,891.36 and 8,203.68 is: 12,307.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.84 : 27,891.36 = 8,203.68 : x
  2. Step 2: Convert to fraction form
    18,591.84/27,891.36 = 8,203.68/x
  3. Step 3: Cross multiply
    18,591.84x = 27,891.36 × 8,203.68
  4. Step 4: Simplify right side
    18,591.84x = 228,811,792.20
  5. Step 5: Solve for x
    x = 228,811,792.20/18,591.84
  6. Step 6: Final answer
    x = 12,307.11

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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.