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Finding the Fourth Proportional to 1,166.76, 1,750.42 and 680.24

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Solution

The fourth proportional to 1,166.76, 1,750.42 and 680.24 is: 1,020.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166.76 : 1,750.42 = 680.24 : x
  2. Step 2: Convert to fraction form
    1,166.76/1,750.42 = 680.24/x
  3. Step 3: Cross multiply
    1,166.76x = 1,750.42 × 680.24
  4. Step 4: Simplify right side
    1,166.76x = 1,190,705.70
  5. Step 5: Solve for x
    x = 1,190,705.70/1,166.76
  6. Step 6: Final answer
    x = 1,020.52

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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.