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Finding the Fourth Proportional to 20,514.99, 30,772.62 and 7,367.49

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Solution

The fourth proportional to 20,514.99, 30,772.62 and 7,367.49 is: 11,051.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.99 : 30,772.62 = 7,367.49 : x
  2. Step 2: Convert to fraction form
    20,514.99/30,772.62 = 7,367.49/x
  3. Step 3: Cross multiply
    20,514.99x = 30,772.62 × 7,367.49
  4. Step 4: Simplify right side
    20,514.99x = 226,716,970.12
  5. Step 5: Solve for x
    x = 226,716,970.12/20,514.99
  6. Step 6: Final answer
    x = 11,051.28

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Double scale
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Similar ratio
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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.