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Finding the Fourth Proportional to 111,603.12, 167,415.64 and 36,692.88

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Solution

The fourth proportional to 111,603.12, 167,415.64 and 36,692.88 is: 55,042.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,603.12 : 167,415.64 = 36,692.88 : x
  2. Step 2: Convert to fraction form
    111,603.12/167,415.64 = 36,692.88/x
  3. Step 3: Cross multiply
    111,603.12x = 167,415.64 × 36,692.88
  4. Step 4: Simplify right side
    111,603.12x = 6,142,961,988.64
  5. Step 5: Solve for x
    x = 6,142,961,988.64/111,603.12
  6. Step 6: Final answer
    x = 55,042.92

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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.