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Finding the Fourth Proportional to 14,665.92, 20,239.12 and 7,951.56

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Solution

The fourth proportional to 14,665.92, 20,239.12 and 7,951.56 is: 10,973.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,665.92 : 20,239.12 = 7,951.56 : x
  2. Step 2: Convert to fraction form
    14,665.92/20,239.12 = 7,951.56/x
  3. Step 3: Cross multiply
    14,665.92x = 20,239.12 × 7,951.56
  4. Step 4: Simplify right side
    14,665.92x = 160,932,577.03
  5. Step 5: Solve for x
    x = 160,932,577.03/14,665.92
  6. Step 6: Final answer
    x = 10,973.23

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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.