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Finding the Fourth Proportional to 1,953.12, 2,933.04 and 1,938

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Solution

The fourth proportional to 1,953.12, 2,933.04 and 1,938 is: 2,910.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.12 : 2,933.04 = 1,938 : x
  2. Step 2: Convert to fraction form
    1,953.12/2,933.04 = 1,938/x
  3. Step 3: Cross multiply
    1,953.12x = 2,933.04 × 1,938
  4. Step 4: Simplify right side
    1,953.12x = 5,684,231.52
  5. Step 5: Solve for x
    x = 5,684,231.52/1,953.12
  6. Step 6: Final answer
    x = 2,910.33

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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.