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Finding the Fourth Proportional to 109,961.30, 164,920.35 and 36,089.30

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Solution

The fourth proportional to 109,961.30, 164,920.35 and 36,089.30 is: 54,126.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,961.30 : 164,920.35 = 36,089.30 : x
  2. Step 2: Convert to fraction form
    109,961.30/164,920.35 = 36,089.30/x
  3. Step 3: Cross multiply
    109,961.30x = 164,920.35 × 36,089.30
  4. Step 4: Simplify right side
    109,961.30x = 5,951,859,987.26
  5. Step 5: Solve for x
    x = 5,951,859,987.26/109,961.30
  6. Step 6: Final answer
    x = 54,126.86

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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.