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Finding the Fourth Proportional to 110,648.45, 165,692.40 and 68,610.64

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Solution

The fourth proportional to 110,648.45, 165,692.40 and 68,610.64 is: 102,742.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,648.45 : 165,692.40 = 68,610.64 : x
  2. Step 2: Convert to fraction form
    110,648.45/165,692.40 = 68,610.64/x
  3. Step 3: Cross multiply
    110,648.45x = 165,692.40 × 68,610.64
  4. Step 4: Simplify right side
    110,648.45x = 11,368,261,607.14
  5. Step 5: Solve for x
    x = 11,368,261,607.14/110,648.45
  6. Step 6: Final answer
    x = 102,742.17

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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.