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Finding the Fourth Proportional to 12,080.56, 16,653.70 and 8,484.60

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Solution

The fourth proportional to 12,080.56, 16,653.70 and 8,484.60 is: 11,696.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,080.56 : 16,653.70 = 8,484.60 : x
  2. Step 2: Convert to fraction form
    12,080.56/16,653.70 = 8,484.60/x
  3. Step 3: Cross multiply
    12,080.56x = 16,653.70 × 8,484.60
  4. Step 4: Simplify right side
    12,080.56x = 141,299,983.02
  5. Step 5: Solve for x
    x = 141,299,983.02/12,080.56
  6. Step 6: Final answer
    x = 11,696.48

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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.