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Finding the Fourth Proportional to 12,832.56, 17,702.28 and 11,150.28

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Solution

The fourth proportional to 12,832.56, 17,702.28 and 11,150.28 is: 15,381.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,832.56 : 17,702.28 = 11,150.28 : x
  2. Step 2: Convert to fraction form
    12,832.56/17,702.28 = 11,150.28/x
  3. Step 3: Cross multiply
    12,832.56x = 17,702.28 × 11,150.28
  4. Step 4: Simplify right side
    12,832.56x = 197,385,378.64
  5. Step 5: Solve for x
    x = 197,385,378.64/12,832.56
  6. Step 6: Final answer
    x = 15,381.61

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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.