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Finding the Fourth Proportional to 22,490.56, 33,728.96 and 8,636.16

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Solution

The fourth proportional to 22,490.56, 33,728.96 and 8,636.16 is: 12,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,490.56 : 33,728.96 = 8,636.16 : x
  2. Step 2: Convert to fraction form
    22,490.56/33,728.96 = 8,636.16/x
  3. Step 3: Cross multiply
    22,490.56x = 33,728.96 × 8,636.16
  4. Step 4: Simplify right side
    22,490.56x = 291,288,695.19
  5. Step 5: Solve for x
    x = 291,288,695.19/22,490.56
  6. Step 6: Final answer
    x = 12,951.60

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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.