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Finding the Fourth Proportional to 106,917.40, 160,376.10 and 82,034.20

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Solution

The fourth proportional to 106,917.40, 160,376.10 and 82,034.20 is: 123,051.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,917.40 : 160,376.10 = 82,034.20 : x
  2. Step 2: Convert to fraction form
    106,917.40/160,376.10 = 82,034.20/x
  3. Step 3: Cross multiply
    106,917.40x = 160,376.10 × 82,034.20
  4. Step 4: Simplify right side
    106,917.40x = 13,156,325,062.62
  5. Step 5: Solve for x
    x = 13,156,325,062.62/106,917.40
  6. Step 6: Final answer
    x = 123,051.30

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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.