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Finding the Fourth Proportional to 123,692.11, 170,695.43 and 67,103.48

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Solution

The fourth proportional to 123,692.11, 170,695.43 and 67,103.48 is: 92,602.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,692.11 : 170,695.43 = 67,103.48 : x
  2. Step 2: Convert to fraction form
    123,692.11/170,695.43 = 67,103.48/x
  3. Step 3: Cross multiply
    123,692.11x = 170,695.43 × 67,103.48
  4. Step 4: Simplify right side
    123,692.11x = 11,454,257,373.10
  5. Step 5: Solve for x
    x = 11,454,257,373.10/123,692.11
  6. Step 6: Final answer
    x = 92,602.98

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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.