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Finding the Fourth Proportional to 115,666.80, 173,759.40 and 110,943.60

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Solution

The fourth proportional to 115,666.80, 173,759.40 and 110,943.60 is: 166,664.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,666.80 : 173,759.40 = 110,943.60 : x
  2. Step 2: Convert to fraction form
    115,666.80/173,759.40 = 110,943.60/x
  3. Step 3: Cross multiply
    115,666.80x = 173,759.40 × 110,943.60
  4. Step 4: Simplify right side
    115,666.80x = 19,277,493,369.84
  5. Step 5: Solve for x
    x = 19,277,493,369.84/115,666.80
  6. Step 6: Final answer
    x = 166,664.02

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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.