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Finding the Fourth Proportional to 14,891.68, 20,551.44 and 8,267.68

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Solution

The fourth proportional to 14,891.68, 20,551.44 and 8,267.68 is: 11,409.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,891.68 : 20,551.44 = 8,267.68 : x
  2. Step 2: Convert to fraction form
    14,891.68/20,551.44 = 8,267.68/x
  3. Step 3: Cross multiply
    14,891.68x = 20,551.44 × 8,267.68
  4. Step 4: Simplify right side
    14,891.68x = 169,912,729.46
  5. Step 5: Solve for x
    x = 169,912,729.46/14,891.68
  6. Step 6: Final answer
    x = 11,409.91

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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.