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Finding the Fourth Proportional to 1,044.84, 1,567.20 and 396

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Solution

The fourth proportional to 1,044.84, 1,567.20 and 396 is: 593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.84 : 1,567.20 = 396 : x
  2. Step 2: Convert to fraction form
    1,044.84/1,567.20 = 396/x
  3. Step 3: Cross multiply
    1,044.84x = 1,567.20 × 396
  4. Step 4: Simplify right side
    1,044.84x = 620,611.20
  5. Step 5: Solve for x
    x = 620,611.20/1,044.84
  6. Step 6: Final answer
    x = 593.98

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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.