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Finding the Fourth Proportional to 79,178.40, 118,834.80 and 32,464.80

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Solution

The fourth proportional to 79,178.40, 118,834.80 and 32,464.80 is: 48,724.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,178.40 : 118,834.80 = 32,464.80 : x
  2. Step 2: Convert to fraction form
    79,178.40/118,834.80 = 32,464.80/x
  3. Step 3: Cross multiply
    79,178.40x = 118,834.80 × 32,464.80
  4. Step 4: Simplify right side
    79,178.40x = 3,857,948,015.04
  5. Step 5: Solve for x
    x = 3,857,948,015.04/79,178.40
  6. Step 6: Final answer
    x = 48,724.75

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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.