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Finding the Fourth Proportional to 133,057.63, 183,618.25 and 72,628.66

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Solution

The fourth proportional to 133,057.63, 183,618.25 and 72,628.66 is: 100,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,057.63 : 183,618.25 = 72,628.66 : x
  2. Step 2: Convert to fraction form
    133,057.63/183,618.25 = 72,628.66/x
  3. Step 3: Cross multiply
    133,057.63x = 183,618.25 × 72,628.66
  4. Step 4: Simplify right side
    133,057.63x = 13,335,947,449.05
  5. Step 5: Solve for x
    x = 13,335,947,449.05/133,057.63
  6. Step 6: Final answer
    x = 100,226.85

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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.