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Finding the Fourth Proportional to 10,373.97, 15,540.15 and 4,819.60

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Solution

The fourth proportional to 10,373.97, 15,540.15 and 4,819.60 is: 7,219.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,373.97 : 15,540.15 = 4,819.60 : x
  2. Step 2: Convert to fraction form
    10,373.97/15,540.15 = 4,819.60/x
  3. Step 3: Cross multiply
    10,373.97x = 15,540.15 × 4,819.60
  4. Step 4: Simplify right side
    10,373.97x = 74,897,344.44
  5. Step 5: Solve for x
    x = 74,897,344.44/10,373.97
  6. Step 6: Final answer
    x = 7,219.74

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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.