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Finding the Fourth Proportional to 1,170.80, 1,617.28 and 952.52

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Solution

The fourth proportional to 1,170.80, 1,617.28 and 952.52 is: 1,315.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.80 : 1,617.28 = 952.52 : x
  2. Step 2: Convert to fraction form
    1,170.80/1,617.28 = 952.52/x
  3. Step 3: Cross multiply
    1,170.80x = 1,617.28 × 952.52
  4. Step 4: Simplify right side
    1,170.80x = 1,540,491.55
  5. Step 5: Solve for x
    x = 1,540,491.55/1,170.80
  6. Step 6: Final answer
    x = 1,315.76

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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.