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Finding the Fourth Proportional to 1,169.62, 1,755.17 and 476.31

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Solution

The fourth proportional to 1,169.62, 1,755.17 and 476.31 is: 714.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.62 : 1,755.17 = 476.31 : x
  2. Step 2: Convert to fraction form
    1,169.62/1,755.17 = 476.31/x
  3. Step 3: Cross multiply
    1,169.62x = 1,755.17 × 476.31
  4. Step 4: Simplify right side
    1,169.62x = 836,005.02
  5. Step 5: Solve for x
    x = 836,005.02/1,169.62
  6. Step 6: Final answer
    x = 714.77

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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.