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Finding the Fourth Proportional to 2,259.93, 3,390.17 and 873.21

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Solution

The fourth proportional to 2,259.93, 3,390.17 and 873.21 is: 1,309.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,259.93 : 3,390.17 = 873.21 : x
  2. Step 2: Convert to fraction form
    2,259.93/3,390.17 = 873.21/x
  3. Step 3: Cross multiply
    2,259.93x = 3,390.17 × 873.21
  4. Step 4: Simplify right side
    2,259.93x = 2,960,325.98
  5. Step 5: Solve for x
    x = 2,960,325.98/2,259.93
  6. Step 6: Final answer
    x = 1,309.92

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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.