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Finding the Fourth Proportional to 1,182.42, 1,773.72 and 672.66

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Solution

The fourth proportional to 1,182.42, 1,773.72 and 672.66 is: 1,009.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.42 : 1,773.72 = 672.66 : x
  2. Step 2: Convert to fraction form
    1,182.42/1,773.72 = 672.66/x
  3. Step 3: Cross multiply
    1,182.42x = 1,773.72 × 672.66
  4. Step 4: Simplify right side
    1,182.42x = 1,193,110.50
  5. Step 5: Solve for x
    x = 1,193,110.50/1,182.42
  6. Step 6: Final answer
    x = 1,009.04

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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.