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Finding the Fourth Proportional to 16,247.28, 22,421.28 and 8,795.28

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Solution

The fourth proportional to 16,247.28, 22,421.28 and 8,795.28 is: 12,137.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,247.28 : 22,421.28 = 8,795.28 : x
  2. Step 2: Convert to fraction form
    16,247.28/22,421.28 = 8,795.28/x
  3. Step 3: Cross multiply
    16,247.28x = 22,421.28 × 8,795.28
  4. Step 4: Simplify right side
    16,247.28x = 197,201,435.56
  5. Step 5: Solve for x
    x = 197,201,435.56/16,247.28
  6. Step 6: Final answer
    x = 12,137.50

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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.