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Finding the Fourth Proportional to 2,969.84, 4,455.24 and 1,021.56

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Solution

The fourth proportional to 2,969.84, 4,455.24 and 1,021.56 is: 1,532.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,969.84 : 4,455.24 = 1,021.56 : x
  2. Step 2: Convert to fraction form
    2,969.84/4,455.24 = 1,021.56/x
  3. Step 3: Cross multiply
    2,969.84x = 4,455.24 × 1,021.56
  4. Step 4: Simplify right side
    2,969.84x = 4,551,294.97
  5. Step 5: Solve for x
    x = 4,551,294.97/2,969.84
  6. Step 6: Final answer
    x = 1,532.51

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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.