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Finding the Fourth Proportional to 1,174.43, 1,763.93 and 914.96

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Solution

The fourth proportional to 1,174.43, 1,763.93 and 914.96 is: 1,374.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.43 : 1,763.93 = 914.96 : x
  2. Step 2: Convert to fraction form
    1,174.43/1,763.93 = 914.96/x
  3. Step 3: Cross multiply
    1,174.43x = 1,763.93 × 914.96
  4. Step 4: Simplify right side
    1,174.43x = 1,613,932.09
  5. Step 5: Solve for x
    x = 1,613,932.09/1,174.43
  6. Step 6: Final answer
    x = 1,374.22

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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.