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Finding the Fourth Proportional to 667,124, 920,631.52 and 361,203.04

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Solution

The fourth proportional to 667,124, 920,631.52 and 361,203.04 is: 498,460.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,124 : 920,631.52 = 361,203.04 : x
  2. Step 2: Convert to fraction form
    667,124/920,631.52 = 361,203.04/x
  3. Step 3: Cross multiply
    667,124x = 920,631.52 × 361,203.04
  4. Step 4: Simplify right side
    667,124x = 332,534,903,743.82
  5. Step 5: Solve for x
    x = 332,534,903,743.82/667,124
  6. Step 6: Final answer
    x = 498,460.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.