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Finding the Fourth Proportional to 445,114.64, 667,672.80 and 108,155.58

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Solution

The fourth proportional to 445,114.64, 667,672.80 and 108,155.58 is: 162,233.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,114.64 : 667,672.80 = 108,155.58 : x
  2. Step 2: Convert to fraction form
    445,114.64/667,672.80 = 108,155.58/x
  3. Step 3: Cross multiply
    445,114.64x = 667,672.80 × 108,155.58
  4. Step 4: Simplify right side
    445,114.64x = 72,212,538,206.88
  5. Step 5: Solve for x
    x = 72,212,538,206.88/445,114.64
  6. Step 6: Final answer
    x = 162,233.57

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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.