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Finding the Fourth Proportional to 10,615.12, 15,922.62 and 2,717.62

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Solution

The fourth proportional to 10,615.12, 15,922.62 and 2,717.62 is: 4,076.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,615.12 : 15,922.62 = 2,717.62 : x
  2. Step 2: Convert to fraction form
    10,615.12/15,922.62 = 2,717.62/x
  3. Step 3: Cross multiply
    10,615.12x = 15,922.62 × 2,717.62
  4. Step 4: Simplify right side
    10,615.12x = 43,271,630.56
  5. Step 5: Solve for x
    x = 43,271,630.56/10,615.12
  6. Step 6: Final answer
    x = 4,076.41

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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.