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Finding the Fourth Proportional to 67,980.20, 101,929.80 and 41,703.80

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Solution

The fourth proportional to 67,980.20, 101,929.80 and 41,703.80 is: 62,530.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,980.20 : 101,929.80 = 41,703.80 : x
  2. Step 2: Convert to fraction form
    67,980.20/101,929.80 = 41,703.80/x
  3. Step 3: Cross multiply
    67,980.20x = 101,929.80 × 41,703.80
  4. Step 4: Simplify right side
    67,980.20x = 4,250,859,993.24
  5. Step 5: Solve for x
    x = 4,250,859,993.24/67,980.20
  6. Step 6: Final answer
    x = 62,530.85

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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.