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Finding the Fourth Proportional to 1,592.96, 2,390.36 and 668.43

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Solution

The fourth proportional to 1,592.96, 2,390.36 and 668.43 is: 1,003.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,592.96 : 2,390.36 = 668.43 : x
  2. Step 2: Convert to fraction form
    1,592.96/2,390.36 = 668.43/x
  3. Step 3: Cross multiply
    1,592.96x = 2,390.36 × 668.43
  4. Step 4: Simplify right side
    1,592.96x = 1,597,784.99
  5. Step 5: Solve for x
    x = 1,597,784.99/1,592.96
  6. Step 6: Final answer
    x = 1,003.03

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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.