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Finding the Fourth Proportional to 5,076.75, 7,615.17 and 1,998.75

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Solution

The fourth proportional to 5,076.75, 7,615.17 and 1,998.75 is: 2,998.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,076.75 : 7,615.17 = 1,998.75 : x
  2. Step 2: Convert to fraction form
    5,076.75/7,615.17 = 1,998.75/x
  3. Step 3: Cross multiply
    5,076.75x = 7,615.17 × 1,998.75
  4. Step 4: Simplify right side
    5,076.75x = 15,220,821.04
  5. Step 5: Solve for x
    x = 15,220,821.04/5,076.75
  6. Step 6: Final answer
    x = 2,998.14

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1.5x scale

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.