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Finding the Fourth Proportional to 1,781.82, 2,458.91 and 995.88

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Solution

The fourth proportional to 1,781.82, 2,458.91 and 995.88 is: 1,374.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.82 : 2,458.91 = 995.88 : x
  2. Step 2: Convert to fraction form
    1,781.82/2,458.91 = 995.88/x
  3. Step 3: Cross multiply
    1,781.82x = 2,458.91 × 995.88
  4. Step 4: Simplify right side
    1,781.82x = 2,448,774.31
  5. Step 5: Solve for x
    x = 2,448,774.31/1,781.82
  6. Step 6: Final answer
    x = 1,374.31

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.