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Finding the Fourth Proportional to 1,170.57, 1,614 and 959.97

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Solution

The fourth proportional to 1,170.57, 1,614 and 959.97 is: 1,323.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.57 : 1,614 = 959.97 : x
  2. Step 2: Convert to fraction form
    1,170.57/1,614 = 959.97/x
  3. Step 3: Cross multiply
    1,170.57x = 1,614 × 959.97
  4. Step 4: Simplify right side
    1,170.57x = 1,549,391.58
  5. Step 5: Solve for x
    x = 1,549,391.58/1,170.57
  6. Step 6: Final answer
    x = 1,323.62

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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.