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Finding the Fourth Proportional to 1,049.31, 1,573.91 and 472.59

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Solution

The fourth proportional to 1,049.31, 1,573.91 and 472.59 is: 708.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.31 : 1,573.91 = 472.59 : x
  2. Step 2: Convert to fraction form
    1,049.31/1,573.91 = 472.59/x
  3. Step 3: Cross multiply
    1,049.31x = 1,573.91 × 472.59
  4. Step 4: Simplify right side
    1,049.31x = 743,811.76
  5. Step 5: Solve for x
    x = 743,811.76/1,049.31
  6. Step 6: Final answer
    x = 708.86

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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.