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Finding the Fourth Proportional to 3,076.65, 4,615.43 and 1,615.92

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Solution

The fourth proportional to 3,076.65, 4,615.43 and 1,615.92 is: 2,424.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.65 : 4,615.43 = 1,615.92 : x
  2. Step 2: Convert to fraction form
    3,076.65/4,615.43 = 1,615.92/x
  3. Step 3: Cross multiply
    3,076.65x = 4,615.43 × 1,615.92
  4. Step 4: Simplify right side
    3,076.65x = 7,458,157.57
  5. Step 5: Solve for x
    x = 7,458,157.57/3,076.65
  6. Step 6: Final answer
    x = 2,424.12

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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.