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Finding the Fourth Proportional to 79,124.68, 118,651.12 and 34,124.76

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Solution

The fourth proportional to 79,124.68, 118,651.12 and 34,124.76 is: 51,171.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,124.68 : 118,651.12 = 34,124.76 : x
  2. Step 2: Convert to fraction form
    79,124.68/118,651.12 = 34,124.76/x
  3. Step 3: Cross multiply
    79,124.68x = 118,651.12 × 34,124.76
  4. Step 4: Simplify right side
    79,124.68x = 4,048,940,993.73
  5. Step 5: Solve for x
    x = 4,048,940,993.73/79,124.68
  6. Step 6: Final answer
    x = 51,171.66

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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.