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Finding the Fourth Proportional to 1,292.76, 1,936.71 and 967.14

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Solution

The fourth proportional to 1,292.76, 1,936.71 and 967.14 is: 1,448.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.76 : 1,936.71 = 967.14 : x
  2. Step 2: Convert to fraction form
    1,292.76/1,936.71 = 967.14/x
  3. Step 3: Cross multiply
    1,292.76x = 1,936.71 × 967.14
  4. Step 4: Simplify right side
    1,292.76x = 1,873,069.71
  5. Step 5: Solve for x
    x = 1,873,069.71/1,292.76
  6. Step 6: Final answer
    x = 1,448.89

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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.