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Finding the Fourth Proportional to 22,085.81, 33,128.20 and 7,092.90

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Solution

The fourth proportional to 22,085.81, 33,128.20 and 7,092.90 is: 10,639.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,085.81 : 33,128.20 = 7,092.90 : x
  2. Step 2: Convert to fraction form
    22,085.81/33,128.20 = 7,092.90/x
  3. Step 3: Cross multiply
    22,085.81x = 33,128.20 × 7,092.90
  4. Step 4: Simplify right side
    22,085.81x = 234,974,992.05
  5. Step 5: Solve for x
    x = 234,974,992.05/22,085.81
  6. Step 6: Final answer
    x = 10,639.18

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1.5x scale

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.