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Finding the Fourth Proportional to 1,565.28, 2,352.24 and 873

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Solution

The fourth proportional to 1,565.28, 2,352.24 and 873 is: 1,311.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565.28 : 2,352.24 = 873 : x
  2. Step 2: Convert to fraction form
    1,565.28/2,352.24 = 873/x
  3. Step 3: Cross multiply
    1,565.28x = 2,352.24 × 873
  4. Step 4: Simplify right side
    1,565.28x = 2,053,505.52
  5. Step 5: Solve for x
    x = 2,053,505.52/1,565.28
  6. Step 6: Final answer
    x = 1,311.91

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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.