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Finding the Fourth Proportional to 5,681.92, 8,523.69 and 1,786.63

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Solution

The fourth proportional to 5,681.92, 8,523.69 and 1,786.63 is: 2,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.92 : 8,523.69 = 1,786.63 : x
  2. Step 2: Convert to fraction form
    5,681.92/8,523.69 = 1,786.63/x
  3. Step 3: Cross multiply
    5,681.92x = 8,523.69 × 1,786.63
  4. Step 4: Simplify right side
    5,681.92x = 15,228,680.26
  5. Step 5: Solve for x
    x = 15,228,680.26/5,681.92
  6. Step 6: Final answer
    x = 2,680.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.