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Finding the Fourth Proportional to 323,907.70, 485,631.15 and 124,150.90

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Solution

The fourth proportional to 323,907.70, 485,631.15 and 124,150.90 is: 186,138.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,907.70 : 485,631.15 = 124,150.90 : x
  2. Step 2: Convert to fraction form
    323,907.70/485,631.15 = 124,150.90/x
  3. Step 3: Cross multiply
    323,907.70x = 485,631.15 × 124,150.90
  4. Step 4: Simplify right side
    323,907.70x = 60,291,544,340.54
  5. Step 5: Solve for x
    x = 60,291,544,340.54/323,907.70
  6. Step 6: Final answer
    x = 186,138.04

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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.