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Finding the Fourth Proportional to 14,168.12, 21,242.57 and 7,932.42

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Solution

The fourth proportional to 14,168.12, 21,242.57 and 7,932.42 is: 11,893.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,168.12 : 21,242.57 = 7,932.42 : x
  2. Step 2: Convert to fraction form
    14,168.12/21,242.57 = 7,932.42/x
  3. Step 3: Cross multiply
    14,168.12x = 21,242.57 × 7,932.42
  4. Step 4: Simplify right side
    14,168.12x = 168,504,947.46
  5. Step 5: Solve for x
    x = 168,504,947.46/14,168.12
  6. Step 6: Final answer
    x = 11,893.25

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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.