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Finding the Fourth Proportional to 79,920.66, 119,880.95 and 23,760.53

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Solution

The fourth proportional to 79,920.66, 119,880.95 and 23,760.53 is: 35,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,920.66 : 119,880.95 = 23,760.53 : x
  2. Step 2: Convert to fraction form
    79,920.66/119,880.95 = 23,760.53/x
  3. Step 3: Cross multiply
    79,920.66x = 119,880.95 × 23,760.53
  4. Step 4: Simplify right side
    79,920.66x = 2,848,434,309.50
  5. Step 5: Solve for x
    x = 2,848,434,309.50/79,920.66
  6. Step 6: Final answer
    x = 35,640.78

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1.5x scale

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.