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Finding the Fourth Proportional to 16,247.69, 22,421.88 and 8,795.69

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Solution

The fourth proportional to 16,247.69, 22,421.88 and 8,795.69 is: 12,138.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,247.69 : 22,421.88 = 8,795.69 : x
  2. Step 2: Convert to fraction form
    16,247.69/22,421.88 = 8,795.69/x
  3. Step 3: Cross multiply
    16,247.69x = 22,421.88 × 8,795.69
  4. Step 4: Simplify right side
    16,247.69x = 197,215,905.70
  5. Step 5: Solve for x
    x = 197,215,905.70/16,247.69
  6. Step 6: Final answer
    x = 12,138.09

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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.