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Finding the Fourth Proportional to 9,885.72, 13,653.60 and 6,736.44

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Solution

The fourth proportional to 9,885.72, 13,653.60 and 6,736.44 is: 9,303.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.72 : 13,653.60 = 6,736.44 : x
  2. Step 2: Convert to fraction form
    9,885.72/13,653.60 = 6,736.44/x
  3. Step 3: Cross multiply
    9,885.72x = 13,653.60 × 6,736.44
  4. Step 4: Simplify right side
    9,885.72x = 91,976,657.18
  5. Step 5: Solve for x
    x = 91,976,657.18/9,885.72
  6. Step 6: Final answer
    x = 9,303.99

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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.