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Finding the Fourth Proportional to 22,182.90, 30,608.37 and 13,230.90

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Solution

The fourth proportional to 22,182.90, 30,608.37 and 13,230.90 is: 18,256.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,182.90 : 30,608.37 = 13,230.90 : x
  2. Step 2: Convert to fraction form
    22,182.90/30,608.37 = 13,230.90/x
  3. Step 3: Cross multiply
    22,182.90x = 30,608.37 × 13,230.90
  4. Step 4: Simplify right side
    22,182.90x = 404,976,282.63
  5. Step 5: Solve for x
    x = 404,976,282.63/22,182.90
  6. Step 6: Final answer
    x = 18,256.24

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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.