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Finding the Fourth Proportional to 5,274.54, 7,912.19 and 1,576.47

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Solution

The fourth proportional to 5,274.54, 7,912.19 and 1,576.47 is: 2,364.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.54 : 7,912.19 = 1,576.47 : x
  2. Step 2: Convert to fraction form
    5,274.54/7,912.19 = 1,576.47/x
  3. Step 3: Cross multiply
    5,274.54x = 7,912.19 × 1,576.47
  4. Step 4: Simplify right side
    5,274.54x = 12,473,322.29
  5. Step 5: Solve for x
    x = 12,473,322.29/5,274.54
  6. Step 6: Final answer
    x = 2,364.82

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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.