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Finding the Fourth Proportional to 1,176.92, 1,765.64 and 355.26

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Solution

The fourth proportional to 1,176.92, 1,765.64 and 355.26 is: 532.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.92 : 1,765.64 = 355.26 : x
  2. Step 2: Convert to fraction form
    1,176.92/1,765.64 = 355.26/x
  3. Step 3: Cross multiply
    1,176.92x = 1,765.64 × 355.26
  4. Step 4: Simplify right side
    1,176.92x = 627,261.27
  5. Step 5: Solve for x
    x = 627,261.27/1,176.92
  6. Step 6: Final answer
    x = 532.97

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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.