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Finding the Fourth Proportional to 993.67, 1,481.75 and 924.41

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Solution

The fourth proportional to 993.67, 1,481.75 and 924.41 is: 1,378.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.67 : 1,481.75 = 924.41 : x
  2. Step 2: Convert to fraction form
    993.67/1,481.75 = 924.41/x
  3. Step 3: Cross multiply
    993.67x = 1,481.75 × 924.41
  4. Step 4: Simplify right side
    993.67x = 1,369,744.52
  5. Step 5: Solve for x
    x = 1,369,744.52/993.67
  6. Step 6: Final answer
    x = 1,378.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.