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Finding the Fourth Proportional to 14,665.62, 20,238.48 and 7,951.41

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Solution

The fourth proportional to 14,665.62, 20,238.48 and 7,951.41 is: 10,972.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,665.62 : 20,238.48 = 7,951.41 : x
  2. Step 2: Convert to fraction form
    14,665.62/20,238.48 = 7,951.41/x
  3. Step 3: Cross multiply
    14,665.62x = 20,238.48 × 7,951.41
  4. Step 4: Simplify right side
    14,665.62x = 160,924,452.26
  5. Step 5: Solve for x
    x = 160,924,452.26/14,665.62
  6. Step 6: Final answer
    x = 10,972.90

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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.