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Finding the Fourth Proportional to 1,692, 2,536.92 and 1,203.84

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Solution

The fourth proportional to 1,692, 2,536.92 and 1,203.84 is: 1,804.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692 : 2,536.92 = 1,203.84 : x
  2. Step 2: Convert to fraction form
    1,692/2,536.92 = 1,203.84/x
  3. Step 3: Cross multiply
    1,692x = 2,536.92 × 1,203.84
  4. Step 4: Simplify right side
    1,692x = 3,054,045.77
  5. Step 5: Solve for x
    x = 3,054,045.77/1,692
  6. Step 6: Final answer
    x = 1,804.99

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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.