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Finding the Fourth Proportional to 116,517.45, 174,665.46 and 74,278.98

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Solution

The fourth proportional to 116,517.45, 174,665.46 and 74,278.98 is: 111,347.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,517.45 : 174,665.46 = 74,278.98 : x
  2. Step 2: Convert to fraction form
    116,517.45/174,665.46 = 74,278.98/x
  3. Step 3: Cross multiply
    116,517.45x = 174,665.46 × 74,278.98
  4. Step 4: Simplify right side
    116,517.45x = 12,973,972,210.03
  5. Step 5: Solve for x
    x = 12,973,972,210.03/116,517.45
  6. Step 6: Final answer
    x = 111,347.89

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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.