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Finding the Fourth Proportional to 22,195.62, 30,619.62 and 13,690.62

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Solution

The fourth proportional to 22,195.62, 30,619.62 and 13,690.62 is: 18,886.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,195.62 : 30,619.62 = 13,690.62 : x
  2. Step 2: Convert to fraction form
    22,195.62/30,619.62 = 13,690.62/x
  3. Step 3: Cross multiply
    22,195.62x = 30,619.62 × 13,690.62
  4. Step 4: Simplify right side
    22,195.62x = 419,201,581.96
  5. Step 5: Solve for x
    x = 419,201,581.96/22,195.62
  6. Step 6: Final answer
    x = 18,886.68

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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.