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Finding the Fourth Proportional to 116,685.20, 174,736.20 and 77,027.60

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Solution

The fourth proportional to 116,685.20, 174,736.20 and 77,027.60 is: 115,348.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,685.20 : 174,736.20 = 77,027.60 : x
  2. Step 2: Convert to fraction form
    116,685.20/174,736.20 = 77,027.60/x
  3. Step 3: Cross multiply
    116,685.20x = 174,736.20 × 77,027.60
  4. Step 4: Simplify right side
    116,685.20x = 13,459,510,119.12
  5. Step 5: Solve for x
    x = 13,459,510,119.12/116,685.20
  6. Step 6: Final answer
    x = 115,348.91

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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.