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Finding the Fourth Proportional to 16,864.67, 25,263.12 and 8,405.67

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Solution

The fourth proportional to 16,864.67, 25,263.12 and 8,405.67 is: 12,591.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,864.67 : 25,263.12 = 8,405.67 : x
  2. Step 2: Convert to fraction form
    16,864.67/25,263.12 = 8,405.67/x
  3. Step 3: Cross multiply
    16,864.67x = 25,263.12 × 8,405.67
  4. Step 4: Simplify right side
    16,864.67x = 212,353,449.89
  5. Step 5: Solve for x
    x = 212,353,449.89/16,864.67
  6. Step 6: Final answer
    x = 12,591.62

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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.