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Finding the Fourth Proportional to 5,752.92, 8,630.92 and 3,119.28

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Solution

The fourth proportional to 5,752.92, 8,630.92 and 3,119.28 is: 4,679.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,752.92 : 8,630.92 = 3,119.28 : x
  2. Step 2: Convert to fraction form
    5,752.92/8,630.92 = 3,119.28/x
  3. Step 3: Cross multiply
    5,752.92x = 8,630.92 × 3,119.28
  4. Step 4: Simplify right side
    5,752.92x = 26,922,256.14
  5. Step 5: Solve for x
    x = 26,922,256.14/5,752.92
  6. Step 6: Final answer
    x = 4,679.76

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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.