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Finding the Fourth Proportional to 106,905.80, 160,320.90 and 36,768.80

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Solution

The fourth proportional to 106,905.80, 160,320.90 and 36,768.80 is: 55,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,905.80 : 160,320.90 = 36,768.80 : x
  2. Step 2: Convert to fraction form
    106,905.80/160,320.90 = 36,768.80/x
  3. Step 3: Cross multiply
    106,905.80x = 160,320.90 × 36,768.80
  4. Step 4: Simplify right side
    106,905.80x = 5,894,807,107.92
  5. Step 5: Solve for x
    x = 5,894,807,107.92/106,905.80
  6. Step 6: Final answer
    x = 55,140.20

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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.