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Finding the Fourth Proportional to 14,665.96, 20,239.09 and 7,951.58

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Solution

The fourth proportional to 14,665.96, 20,239.09 and 7,951.58 is: 10,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,665.96 : 20,239.09 = 7,951.58 : x
  2. Step 2: Convert to fraction form
    14,665.96/20,239.09 = 7,951.58/x
  3. Step 3: Cross multiply
    14,665.96x = 20,239.09 × 7,951.58
  4. Step 4: Simplify right side
    14,665.96x = 160,932,743.26
  5. Step 5: Solve for x
    x = 160,932,743.26/14,665.96
  6. Step 6: Final answer
    x = 10,973.22

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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.