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Finding the Fourth Proportional to 1,136.48, 1,704.17 and 396.08

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Solution

The fourth proportional to 1,136.48, 1,704.17 and 396.08 is: 593.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136.48 : 1,704.17 = 396.08 : x
  2. Step 2: Convert to fraction form
    1,136.48/1,704.17 = 396.08/x
  3. Step 3: Cross multiply
    1,136.48x = 1,704.17 × 396.08
  4. Step 4: Simplify right side
    1,136.48x = 674,980.52
  5. Step 5: Solve for x
    x = 674,980.52/1,136.48
  6. Step 6: Final answer
    x = 593.92

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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.