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Finding the Fourth Proportional to 207,273.20, 310,986.60 and 82,703.60

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Solution

The fourth proportional to 207,273.20, 310,986.60 and 82,703.60 is: 124,086.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,273.20 : 310,986.60 = 82,703.60 : x
  2. Step 2: Convert to fraction form
    207,273.20/310,986.60 = 82,703.60/x
  3. Step 3: Cross multiply
    207,273.20x = 310,986.60 × 82,703.60
  4. Step 4: Simplify right side
    207,273.20x = 25,719,711,371.76
  5. Step 5: Solve for x
    x = 25,719,711,371.76/207,273.20
  6. Step 6: Final answer
    x = 124,086.04

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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.