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Finding the Fourth Proportional to 1,592.91, 2,385.13 and 1,072.11

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Solution

The fourth proportional to 1,592.91, 2,385.13 and 1,072.11 is: 1,605.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,592.91 : 2,385.13 = 1,072.11 : x
  2. Step 2: Convert to fraction form
    1,592.91/2,385.13 = 1,072.11/x
  3. Step 3: Cross multiply
    1,592.91x = 2,385.13 × 1,072.11
  4. Step 4: Simplify right side
    1,592.91x = 2,557,121.72
  5. Step 5: Solve for x
    x = 2,557,121.72/1,592.91
  6. Step 6: Final answer
    x = 1,605.31

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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.