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Finding the Fourth Proportional to 111,463.25, 166,909.37 and 61,487.80

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Solution

The fourth proportional to 111,463.25, 166,909.37 and 61,487.80 is: 92,074.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,463.25 : 166,909.37 = 61,487.80 : x
  2. Step 2: Convert to fraction form
    111,463.25/166,909.37 = 61,487.80/x
  3. Step 3: Cross multiply
    111,463.25x = 166,909.37 × 61,487.80
  4. Step 4: Simplify right side
    111,463.25x = 10,262,889,235.97
  5. Step 5: Solve for x
    x = 10,262,889,235.97/111,463.25
  6. Step 6: Final answer
    x = 92,074.20

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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.