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Finding the Fourth Proportional to 124,662.60, 186,936.30 and 54,505.80

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Solution

The fourth proportional to 124,662.60, 186,936.30 and 54,505.80 is: 81,733.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,662.60 : 186,936.30 = 54,505.80 : x
  2. Step 2: Convert to fraction form
    124,662.60/186,936.30 = 54,505.80/x
  3. Step 3: Cross multiply
    124,662.60x = 186,936.30 × 54,505.80
  4. Step 4: Simplify right side
    124,662.60x = 10,189,112,580.54
  5. Step 5: Solve for x
    x = 10,189,112,580.54/124,662.60
  6. Step 6: Final answer
    x = 81,733.52

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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.