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Finding the Fourth Proportional to 79,328.20, 118,895.10 and 34,907.80

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Solution

The fourth proportional to 79,328.20, 118,895.10 and 34,907.80 is: 52,318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,328.20 : 118,895.10 = 34,907.80 : x
  2. Step 2: Convert to fraction form
    79,328.20/118,895.10 = 34,907.80/x
  3. Step 3: Cross multiply
    79,328.20x = 118,895.10 × 34,907.80
  4. Step 4: Simplify right side
    79,328.20x = 4,150,366,371.78
  5. Step 5: Solve for x
    x = 4,150,366,371.78/79,328.20
  6. Step 6: Final answer
    x = 52,318.93

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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.