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Finding the Fourth Proportional to 2,308.71, 3,186.09 and 1,314.14

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Solution

The fourth proportional to 2,308.71, 3,186.09 and 1,314.14 is: 1,813.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,308.71 : 3,186.09 = 1,314.14 : x
  2. Step 2: Convert to fraction form
    2,308.71/3,186.09 = 1,314.14/x
  3. Step 3: Cross multiply
    2,308.71x = 3,186.09 × 1,314.14
  4. Step 4: Simplify right side
    2,308.71x = 4,186,952.38
  5. Step 5: Solve for x
    x = 4,186,952.38/2,308.71
  6. Step 6: Final answer
    x = 1,813.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.