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Finding the Fourth Proportional to 1,167.60, 1,610.49 and 852.31

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Solution

The fourth proportional to 1,167.60, 1,610.49 and 852.31 is: 1,175.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.60 : 1,610.49 = 852.31 : x
  2. Step 2: Convert to fraction form
    1,167.60/1,610.49 = 852.31/x
  3. Step 3: Cross multiply
    1,167.60x = 1,610.49 × 852.31
  4. Step 4: Simplify right side
    1,167.60x = 1,372,636.73
  5. Step 5: Solve for x
    x = 1,372,636.73/1,167.60
  6. Step 6: Final answer
    x = 1,175.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.