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Finding the Fourth Proportional to 22,195.69, 30,630.96 and 12,764.25

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Solution

The fourth proportional to 22,195.69, 30,630.96 and 12,764.25 is: 17,615.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,195.69 : 30,630.96 = 12,764.25 : x
  2. Step 2: Convert to fraction form
    22,195.69/30,630.96 = 12,764.25/x
  3. Step 3: Cross multiply
    22,195.69x = 30,630.96 × 12,764.25
  4. Step 4: Simplify right side
    22,195.69x = 390,981,231.18
  5. Step 5: Solve for x
    x = 390,981,231.18/22,195.69
  6. Step 6: Final answer
    x = 17,615.19

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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.