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Finding the Fourth Proportional to 974.44, 1,461.68 and 829.88

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Solution

The fourth proportional to 974.44, 1,461.68 and 829.88 is: 1,244.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.44 : 1,461.68 = 829.88 : x
  2. Step 2: Convert to fraction form
    974.44/1,461.68 = 829.88/x
  3. Step 3: Cross multiply
    974.44x = 1,461.68 × 829.88
  4. Step 4: Simplify right side
    974.44x = 1,213,019.00
  5. Step 5: Solve for x
    x = 1,213,019.00/974.44
  6. Step 6: Final answer
    x = 1,244.84

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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.