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Finding the Fourth Proportional to 1,592.90, 2,389.46 and 668.33

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Solution

The fourth proportional to 1,592.90, 2,389.46 and 668.33 is: 1,002.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,592.90 : 2,389.46 = 668.33 : x
  2. Step 2: Convert to fraction form
    1,592.90/2,389.46 = 668.33/x
  3. Step 3: Cross multiply
    1,592.90x = 2,389.46 × 668.33
  4. Step 4: Simplify right side
    1,592.90x = 1,596,932.51
  5. Step 5: Solve for x
    x = 1,596,932.51/1,592.90
  6. Step 6: Final answer
    x = 1,002.53

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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.