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Finding the Fourth Proportional to 107,364.60, 161,046.90 and 75,871.80

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Solution

The fourth proportional to 107,364.60, 161,046.90 and 75,871.80 is: 113,807.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,364.60 : 161,046.90 = 75,871.80 : x
  2. Step 2: Convert to fraction form
    107,364.60/161,046.90 = 75,871.80/x
  3. Step 3: Cross multiply
    107,364.60x = 161,046.90 × 75,871.80
  4. Step 4: Simplify right side
    107,364.60x = 12,218,918,187.42
  5. Step 5: Solve for x
    x = 12,218,918,187.42/107,364.60
  6. Step 6: Final answer
    x = 113,807.70

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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.