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Finding the Fourth Proportional to 996.90, 1,492.11 and 704.58

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Solution

The fourth proportional to 996.90, 1,492.11 and 704.58 is: 1,054.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.90 : 1,492.11 = 704.58 : x
  2. Step 2: Convert to fraction form
    996.90/1,492.11 = 704.58/x
  3. Step 3: Cross multiply
    996.90x = 1,492.11 × 704.58
  4. Step 4: Simplify right side
    996.90x = 1,051,310.86
  5. Step 5: Solve for x
    x = 1,051,310.86/996.90
  6. Step 6: Final answer
    x = 1,054.58

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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.