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Finding the Fourth Proportional to 109,675.30, 164,512.95 and 74,245.90

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Solution

The fourth proportional to 109,675.30, 164,512.95 and 74,245.90 is: 111,368.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,675.30 : 164,512.95 = 74,245.90 : x
  2. Step 2: Convert to fraction form
    109,675.30/164,512.95 = 74,245.90/x
  3. Step 3: Cross multiply
    109,675.30x = 164,512.95 × 74,245.90
  4. Step 4: Simplify right side
    109,675.30x = 12,214,412,034.41
  5. Step 5: Solve for x
    x = 12,214,412,034.41/109,675.30
  6. Step 6: Final answer
    x = 111,368.85

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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.