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Finding the Fourth Proportional to 2,325.40, 3,487.28 and 681.52

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Solution

The fourth proportional to 2,325.40, 3,487.28 and 681.52 is: 1,022.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,325.40 : 3,487.28 = 681.52 : x
  2. Step 2: Convert to fraction form
    2,325.40/3,487.28 = 681.52/x
  3. Step 3: Cross multiply
    2,325.40x = 3,487.28 × 681.52
  4. Step 4: Simplify right side
    2,325.40x = 2,376,651.07
  5. Step 5: Solve for x
    x = 2,376,651.07/2,325.40
  6. Step 6: Final answer
    x = 1,022.04

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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.