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Finding the Fourth Proportional to 366,980.85, 550,471.28 and 156,640.05

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Solution

The fourth proportional to 366,980.85, 550,471.28 and 156,640.05 is: 234,960.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,980.85 : 550,471.28 = 156,640.05 : x
  2. Step 2: Convert to fraction form
    366,980.85/550,471.28 = 156,640.05/x
  3. Step 3: Cross multiply
    366,980.85x = 550,471.28 × 156,640.05
  4. Step 4: Simplify right side
    366,980.85x = 86,225,848,039.56
  5. Step 5: Solve for x
    x = 86,225,848,039.56/366,980.85
  6. Step 6: Final answer
    x = 234,960.08

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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.