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Finding the Fourth Proportional to 107,866.40, 161,770.80 and 32,986.40

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Solution

The fourth proportional to 107,866.40, 161,770.80 and 32,986.40 is: 49,470.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,866.40 : 161,770.80 = 32,986.40 : x
  2. Step 2: Convert to fraction form
    107,866.40/161,770.80 = 32,986.40/x
  3. Step 3: Cross multiply
    107,866.40x = 161,770.80 × 32,986.40
  4. Step 4: Simplify right side
    107,866.40x = 5,336,236,317.12
  5. Step 5: Solve for x
    x = 5,336,236,317.12/107,866.40
  6. Step 6: Final answer
    x = 49,470.79

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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.