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Finding the Fourth Proportional to 18,568.89, 27,820.89 and 15,468.75

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Solution

The fourth proportional to 18,568.89, 27,820.89 and 15,468.75 is: 23,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,568.89 : 27,820.89 = 15,468.75 : x
  2. Step 2: Convert to fraction form
    18,568.89/27,820.89 = 15,468.75/x
  3. Step 3: Cross multiply
    18,568.89x = 27,820.89 × 15,468.75
  4. Step 4: Simplify right side
    18,568.89x = 430,354,392.19
  5. Step 5: Solve for x
    x = 430,354,392.19/18,568.89
  6. Step 6: Final answer
    x = 23,176.10

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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.