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Finding the Fourth Proportional to 67,643.90, 101,271.45 and 41,399.90

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Solution

The fourth proportional to 67,643.90, 101,271.45 and 41,399.90 is: 61,980.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,643.90 : 101,271.45 = 41,399.90 : x
  2. Step 2: Convert to fraction form
    67,643.90/101,271.45 = 41,399.90/x
  3. Step 3: Cross multiply
    67,643.90x = 101,271.45 × 41,399.90
  4. Step 4: Simplify right side
    67,643.90x = 4,192,627,902.86
  5. Step 5: Solve for x
    x = 4,192,627,902.86/67,643.90
  6. Step 6: Final answer
    x = 61,980.87

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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.