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Finding the Fourth Proportional to 22,092.90, 30,489.26 and 12,661.48

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Solution

The fourth proportional to 22,092.90, 30,489.26 and 12,661.48 is: 17,473.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,092.90 : 30,489.26 = 12,661.48 : x
  2. Step 2: Convert to fraction form
    22,092.90/30,489.26 = 12,661.48/x
  3. Step 3: Cross multiply
    22,092.90x = 30,489.26 × 12,661.48
  4. Step 4: Simplify right side
    22,092.90x = 386,039,155.70
  5. Step 5: Solve for x
    x = 386,039,155.70/22,092.90
  6. Step 6: Final answer
    x = 17,473.45

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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.