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Finding the Fourth Proportional to 984.96, 1,476.40 and 335.24

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Solution

The fourth proportional to 984.96, 1,476.40 and 335.24 is: 502.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.96 : 1,476.40 = 335.24 : x
  2. Step 2: Convert to fraction form
    984.96/1,476.40 = 335.24/x
  3. Step 3: Cross multiply
    984.96x = 1,476.40 × 335.24
  4. Step 4: Simplify right side
    984.96x = 494,948.34
  5. Step 5: Solve for x
    x = 494,948.34/984.96
  6. Step 6: Final answer
    x = 502.51

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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.