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Finding the Fourth Proportional to 8,682.92, 11,988.36 and 5,543.36

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Solution

The fourth proportional to 8,682.92, 11,988.36 and 5,543.36 is: 7,653.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.92 : 11,988.36 = 5,543.36 : x
  2. Step 2: Convert to fraction form
    8,682.92/11,988.36 = 5,543.36/x
  3. Step 3: Cross multiply
    8,682.92x = 11,988.36 × 5,543.36
  4. Step 4: Simplify right side
    8,682.92x = 66,455,795.29
  5. Step 5: Solve for x
    x = 66,455,795.29/8,682.92
  6. Step 6: Final answer
    x = 7,653.62

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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.