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Finding the Fourth Proportional to 22,613.60, 33,915 and 6,815.36

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Solution

The fourth proportional to 22,613.60, 33,915 and 6,815.36 is: 10,221.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,613.60 : 33,915 = 6,815.36 : x
  2. Step 2: Convert to fraction form
    22,613.60/33,915 = 6,815.36/x
  3. Step 3: Cross multiply
    22,613.60x = 33,915 × 6,815.36
  4. Step 4: Simplify right side
    22,613.60x = 231,142,934.40
  5. Step 5: Solve for x
    x = 231,142,934.40/22,613.60
  6. Step 6: Final answer
    x = 10,221.41

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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.