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Finding the Fourth Proportional to 13,211.88, 18,232.94 and 7,244.08

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Solution

The fourth proportional to 13,211.88, 18,232.94 and 7,244.08 is: 9,997.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.88 : 18,232.94 = 7,244.08 : x
  2. Step 2: Convert to fraction form
    13,211.88/18,232.94 = 7,244.08/x
  3. Step 3: Cross multiply
    13,211.88x = 18,232.94 × 7,244.08
  4. Step 4: Simplify right side
    13,211.88x = 132,080,876.00
  5. Step 5: Solve for x
    x = 132,080,876.00/13,211.88
  6. Step 6: Final answer
    x = 9,997.13

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Half scale
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Similar ratio
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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.