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Finding the Fourth Proportional to 1,049.95, 1,576.29 and 914.48

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Solution

The fourth proportional to 1,049.95, 1,576.29 and 914.48 is: 1,372.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.95 : 1,576.29 = 914.48 : x
  2. Step 2: Convert to fraction form
    1,049.95/1,576.29 = 914.48/x
  3. Step 3: Cross multiply
    1,049.95x = 1,576.29 × 914.48
  4. Step 4: Simplify right side
    1,049.95x = 1,441,485.68
  5. Step 5: Solve for x
    x = 1,441,485.68/1,049.95
  6. Step 6: Final answer
    x = 1,372.91

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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.