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Finding the Fourth Proportional to 14,691.15, 20,273.66 and 7,976.64

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Solution

The fourth proportional to 14,691.15, 20,273.66 and 7,976.64 is: 11,007.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,691.15 : 20,273.66 = 7,976.64 : x
  2. Step 2: Convert to fraction form
    14,691.15/20,273.66 = 7,976.64/x
  3. Step 3: Cross multiply
    14,691.15x = 20,273.66 × 7,976.64
  4. Step 4: Simplify right side
    14,691.15x = 161,715,647.42
  5. Step 5: Solve for x
    x = 161,715,647.42/14,691.15
  6. Step 6: Final answer
    x = 11,007.70

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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.