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Finding the Fourth Proportional to 11,568.79, 17,353.19 and 5,719.51

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Solution

The fourth proportional to 11,568.79, 17,353.19 and 5,719.51 is: 8,579.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,568.79 : 17,353.19 = 5,719.51 : x
  2. Step 2: Convert to fraction form
    11,568.79/17,353.19 = 5,719.51/x
  3. Step 3: Cross multiply
    11,568.79x = 17,353.19 × 5,719.51
  4. Step 4: Simplify right side
    11,568.79x = 99,251,743.74
  5. Step 5: Solve for x
    x = 99,251,743.74/11,568.79
  6. Step 6: Final answer
    x = 8,579.27

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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.